| Rank | Air Quality Index ▼ | School District / Population |
| 1. | 42.2 | East Central Community School District / 4,005 |
| 1. | 42.2 | Northeast Community School District / 2,941 |
| 1. | 42.2 | Central Clinton Community School District / 9,489 |
| 4. | 42.1 | Bellevue Community School District / 4,704 |
| 4. | 42.1 | Preston Community School District / 1,842 |
| 4. | 42.1 | Andrew Community School District / 1,551 |
| 4. | 42.1 | Maquoketa Community School District / 8,888 |
| 4. | 42.1 | Delwood Community School District / 1,123 |
| 9. | 41.9 | Clinton Community School District / 25,889 |
| 9. | 41.9 | Camanche Community School District / 5,616 |
| 11. | 41.8 | North Scott Community School District / 15,673 |
| 11. | 41.8 | Calamus-Wheatland Community School District / 2,301 |
| 13. | 41.2 | Mediapolis Community School District / 4,736 |
| 14. | 41.1 | Morning Sun Community School District / 1,362 |
| 15. | 40.9 | Durant Community School District / 3,345 |
| 16. | 40.8 | Muscatine Community School District / 29,190 |
| 16. | 40.8 | Wilton Community School District / 4,251 |
| 18. | 40.7 | Louisa-Muscatine Community School District / 4,762 |
| 18. | 40.7 | Wapello Community School District / 3,582 |
| 20. | 40.6 | West Liberty Community School District / 6,333 |
| 20. | 40.6 | Columbus Community School District / 4,667 |
| 22. | 40.4 | Manning Community School District / 2,240 |
| 22. | 40.4 | Remsen-Union Community School District / 3,013 |
| 22. | 40.4 | Akron-Westfield Community School District / 3,200 |
| 22. | 40.4 | West Sioux Community School District / 3,988 |
| 22. | 40.4 | Le Mars Community School District / 13,419 |
| 22. | 40.4 | Harlan Community School District / 8,844 |
| 22. | 40.4 | IKM Community School District / 4,641 |
| 29. | 40.3 | Sioux City Community School District / 83,385 |
| 29. | 40.3 | Burlington Community School District / 30,070 |
| 29. | 40.3 | Maple Valley Community School District / 4,404 |
| 29. | 40.3 | Hinton Community School District / 2,690 |
| 29. | 40.3 | Fort Madison Community School District / 17,216 |
| 29. | 40.3 | West Burlington Independent School District / 2,839 |
| 29. | 40.3 | Logan-Magnolia Community School District / 2,902 |
| 29. | 40.3 | Charter Oak-Ute Community School District / 2,099 |
| 29. | 40.3 | Ar-We-Va Community School District / 2,230 |
| 29. | 40.3 | Woodbine Community School District / 2,660 |
| 29. | 40.3 | Denison Community School District / 10,354 |
| 29. | 40.3 | Van Buren Community School District / 5,065 |
| 29. | 40.3 | Dubuque Community School District / 76,893 |
| 29. | 40.3 | Woodbury Central Community School District / 2,901 |
| 29. | 40.3 | Boyer Valley Community School District / 2,740 |
| 29. | 40.3 | Eastern Allamakee Community School District / 2,710 |
| 29. | 40.3 | Anthon-Oto Community School District / 1,381 |
| 29. | 40.3 | West Harrison Community School District / 2,638 |
| 29. | 40.3 | West Monona Community School District / 4,003 |
| 48. | 40.2 | North Winneshiek Community School District / 2,037 |
| 48. | 40.2 | Howard-Winneshiek Community School District / 9,042 |
| 48. | 40.2 | Charles City Community School District / 11,219 |
| 48. | 40.2 | Midland Community School District / 3,620 |
| 48. | 40.2 | Osage Community School District / 5,969 |
| 48. | 40.2 | New Hampton Community School District / 7,238 |
| 54. | 40.1 | Harmony Community School District / 2,823 |
| 54. | 40.1 | Central Community School District / 3,329 |
| 54. | 40.1 | Central Lee Community School District / 5,129 |
| 54. | 40.1 | Rudd-Rockford-Marble Rock Community School District / 2,956 |
| 54. | 40.1 | Bennett Community School District / 1,138 |
| 54. | 40.1 | Decorah Community School District / 11,789 |
| 54. | 40.1 | Allamakee Community School District / 8,539 |
| 54. | 40.1 | Postville Community School District / 3,489 |
| 62. | 40.0 | Wapsie Valley Community School District / 3,790 |
| 62. | 40.0 | West Central Community School District / 1,871 |
| 62. | 40.0 | Sumner Community School District / 3,448 |
| 62. | 40.0 | Clarksville Community School District / 2,094 |
| 62. | 40.0 | New London Community School District / 2,987 |
| 62. | 40.0 | Dike-New Hartford Community School District / 4,498 |
| 62. | 40.0 | Oelwein Community School District / 8,702 |
| 62. | 40.0 | Tripoli Community School District / 2,771 |
| 62. | 40.0 | Denver Community School District / 3,847 |
| 62. | 40.0 | Valley Community School District / 3,065 |
| 62. | 40.0 | Union Community School District / 6,347 |
| 62. | 40.0 | Danville Community School District / 2,743 |
| 62. | 40.0 | Davenport Community School District / 108,996 |
| 62. | 40.0 | North Fayette Community School District / 6,122 |
| 62. | 40.0 | Starmont Community School District / 3,814 |
| 62. | 40.0 | Cedar Falls Community School District / 41,989 |
| 62. | 40.0 | Janesville Consolidated School District / 2,455 |
| 62. | 40.0 | Jesup Community School District / 5,895 |
| 62. | 40.0 | Waverly-Shell Rock Community School District / 13,825 |
| 62. | 40.0 | Independence Community School District / 9,001 |
| 62. | 40.0 | Nashua-Plainfield Community School District / 3,878 |
| 62. | 40.0 | Hudson Community School District / 3,327 |
| 62. | 40.0 | Waterloo Community School District / 77,406 |
| 62. | 40.0 | Fredericksburg Community School District / 1,824 |
| 62. | 40.0 | Dunkerton Community School District / 2,499 |
| 87. | 39.9 | Pleasant Valley Community School District / 20,099 |
| 87. | 39.9 | Greene Community School District / 2,045 |
| 87. | 39.9 | Bettendorf Community School District / 23,151 |
| 87. | 39.9 | Allison-Bristow Community School District / 4,070 |
| 87. | 39.9 | Keokuk Community School District / 12,931 |
| 87. | 39.9 | North Central Community School District / 5,594 |
| 93. | 39.8 | South Winneshiek Community School District / 4,523 |
| 93. | 39.8 | Nora Springs-Rock Falls Community School District / 2,466 |
| 93. | 39.8 | Mount Pleasant Community School District / 12,907 |
| 93. | 39.8 | River Valley Community School District / 2,583 |
| 93. | 39.8 | Galva-Holstein Community School District / 2,573 |
| 93. | 39.8 | Lawton-Bronson Community School District / 3,078 |
| 93. | 39.8 | Mason City Community School District / 28,622 |
| 93. | 39.8 | Riceville Community School District / 2,655 |
| 93. | 39.8 | Odebolt-Arthur Community School District / 2,227 |
| 93. | 39.8 | Wall Lake View Auburn Community School District / 5,728 |
| 93. | 39.8 | Battle Creek-Ida Grove Community School District / 3,937 |
| 104. | 39.7 | Tipton Community School District / 4,999 |
| 104. | 39.7 | Westwood Community School District / 3,153 |
| 104. | 39.7 | Whiting Community School District / 1,328 |
| 104. | 39.7 | North Cedar Community School District / 5,101 |
| 104. | 39.7 | West Branch Community School District / 4,319 |
| 104. | 39.7 | Highland Community School District / 4,128 |
| 110. | 39.6 | St. Ansgar Community School District / 4,065 |
| 110. | 39.6 | West Lyon Community School District / 4,823 |
| 110. | 39.6 | Anamosa Community School District / 9,287 |
| 110. | 39.6 | Central Lyon Community School District / 4,018 |
| 110. | 39.6 | Northwood-Kensett Community School District / 3,314 |
| 110. | 39.6 | MFL MarMac Community School District / 5,471 |
| 110. | 39.6 | Solon Community School District / 6,638 |
| 110. | 39.6 | Lisbon Community School District / 2,816 |
| 110. | 39.6 | Springville Community School District / 2,568 |
| 110. | 39.6 | Clear Creek-Amana Community School District / 12,321 |
| 110. | 39.6 | College Community School District / 24,875 |
| 110. | 39.6 | Olin Consolidated School District / 1,480 |
| 110. | 39.6 | Williamsburg Community School District / 6,496 |
| 110. | 39.6 | Iowa City Community School District / 110,675 |
| 110. | 39.6 | Mount Vernon Community School District / 6,779 |
| 110. | 39.6 | Winfield-Mount Union Community School District / 1,651 |
| 126. | 39.5 | Turkey Valley Community School District / 2,954 |
| 126. | 39.5 | Kingsley-Pierson Community School District / 2,646 |
| 128. | 39.5 | North Tama County Community School District / 3,086 |
| 128. | 39.5 | South Tama County Community School District / 8,674 |
| 128. | 39.5 | Sergeant Bluff-Luton Community School District / 6,278 |
| 128. | 39.5 | Ottumwa Community School District / 28,949 |
| 128. | 39.5 | Gladbrook-Reinbeck Community School District / 4,417 |
| 133. | 39.4 | Lone Tree Community School District / 2,278 |
| 133. | 39.4 | Cedar Rapids Community School District / 120,797 |
| 133. | 39.4 | Iowa Valley Community School District / 3,512 |
| 133. | 39.4 | Linn-Mar Community School District / 37,068 |
| 133. | 39.4 | Belle Plaine Community School District / 3,236 |
| 133. | 39.4 | Davis County Community School District / 8,677 |
| 133. | 39.4 | H-L-V Community School District / 2,207 |
| 133. | 39.4 | Benton Community School District / 9,202 |
| 133. | 39.4 | West Delaware County Community School District / 9,003 |
| 133. | 39.4 | North Linn Community School District / 3,653 |
| 133. | 39.4 | Cardinal Community School District / 4,014 |
| 133. | 39.4 | Schleswig Community School District / 1,630 |
| 133. | 39.4 | Marion Independent School District / 12,255 |
| 133. | 39.4 | Edgewood-Colesburg Community School District / 2,949 |
| 133. | 39.4 | Alburnett Community School District / 3,524 |
| 133. | 39.4 | Waco Community School District / 3,209 |
| 133. | 39.4 | East Buchanan Community School District / 2,905 |
| 133. | 39.4 | Monticello Community School District / 6,621 |
| 133. | 39.4 | Fairfield Community School District / 15,659 |
| 133. | 39.4 | Clayton Ridge Community School District / 5,044 |
| 133. | 39.4 | Pekin Community School District / 3,690 |
| 133. | 39.4 | Western Dubuque Community School District / 22,060 |
| 133. | 39.4 | Washington Community School District / 10,221 |
| 133. | 39.4 | Center Point-Urbana Community School District / 5,868 |
| 133. | 39.4 | Maquoketa Valley Community School District / 4,450 |
| 133. | 39.4 | Central City Community School District / 2,998 |
| 133. | 39.4 | Vinton-Shellsburg Community School District / 10,383 |
| 160. | 39.3 | Audubon Community School District / 3,382 |
| 160. | 39.3 | Carroll Community School District / 14,060 |
| 162. | 39.2 | Mid-Prairie Community School District / 9,096 |
| 162. | 39.2 | Keota Community School District / 2,064 |
| 162. | 39.2 | English Valleys Community School District / 2,890 |
| 165. | 39.1 | Elk Horn-Kimballton Community School District / 1,467 |
| 166. | 39.0 | Eddyville-Blakesburg Community School District / 5,108 |
| 166. | 39.0 | Centerville Community School District / 8,881 |
| 166. | 39.0 | Moulton-Udell Community School District / 1,375 |
| 166. | 39.0 | Moravia Community School District / 2,300 |
| 166. | 39.0 | Fremont Community School District / 1,135 |
| 166. | 39.0 | Sigourney Community School District / 3,751 |
| 172. | 38.8 | Tri-County Community School District / 1,682 |
| 173. | 38.4 | Riverside Community School District / 4,115 |
| 173. | 38.4 | Council Bluffs Community School District / 59,876 |
| 173. | 38.4 | Underwood Community School District / 4,036 |
| 173. | 38.4 | Lewis Central Community School District / 15,278 |
| 173. | 38.4 | Treynor Community School District / 3,013 |
| 173. | 38.4 | Malvern Community School District / 3,384 |
| 179. | 38.3 | Glenwood Community School District / 11,075 |
| 179. | 38.3 | Sibley-Ocheyedan Community School District / 4,603 |
| 181. | 38.2 | MOC-Floyd Valley Community School District / 11,218 |
| 181. | 38.2 | George-Little Rock Community School District / 2,698 |
| 181. | 38.2 | Sioux Center Community School District / 8,923 |
| 181. | 38.2 | Rock Valley Community School District / 5,192 |
| 181. | 38.2 | Sheldon Community School District / 7,292 |
| 181. | 38.2 | Boyden-Hull Community School District / 4,358 |
| 187. | 38.1 | New Market Community School District / 957 |
| 188. | 38.0 | Sheffield Chapin Meservey Thornton Community School District / 4,716 |
| 189. | 37.9 | Rockwell-Swaledale Community School District / 1,970 |
| 189. | 37.9 | Corning Community School District / 2,814 |
| 189. | 37.9 | Dows Community School District / 801 |
| 189. | 37.9 | Clear Lake Community School District / 8,752 |
| 189. | 37.9 | Aplington-Parkersburg Community School District / 4,304 |
| 189. | 37.9 | Ventura Community School District / 1,683 |
| 189. | 37.9 | Villisca Community School District / 2,189 |
| 189. | 37.9 | Griswold Community School District / 3,404 |
| 189. | 37.9 | Grundy Center Community School District / 3,725 |
| 189. | 37.9 | Belmond-Klemme Community School District / 4,389 |
| 189. | 37.9 | Cal Community School District / 1,713 |
| 189. | 37.9 | C and M Community School District / 2,951 |
| 201. | 37.8 | Newell-Fonda Community School District / 2,569 |
| 201. | 37.8 | Storm Lake Community School District / 12,212 |
| 201. | 37.8 | Red Oak Community School District / 6,975 |
| 201. | 37.8 | Alta Community School District / 2,893 |
| 201. | 37.8 | Sac Community School District / 2,765 |
| 201. | 37.8 | Schaller-Crestland Community School District / 2,388 |
| 201. | 37.8 | Essex Community School District / 1,445 |
| 201. | 37.8 | Walnut Community School District / 1,219 |
| 201. | 37.8 | Aurelia Community School District / 1,646 |
| 201. | 37.8 | Atlantic Community School District / 8,459 |
| 201. | 37.8 | Stanton Community School District / 1,214 |
| 201. | 37.8 | Brooklyn-Guernsey-Malcom Community School District / 3,173 |
| 201. | 37.8 | Albert City-Truesdale Community School District / 1,472 |
| 201. | 37.8 | Nishna Valley Community School District / 1,334 |
| 215. | 37.6 | Exira Community School District / 1,825 |
| 216. | 37.5 | Sioux Central Community School District / 2,581 |
| 216. | 37.5 | Marcus-Meriden-Cleghorn Community School District / 2,921 |
| 216. | 37.5 | Cherokee Community School District / 6,432 |
| 219. | 37.5 | Eldora-New Providence Community School District / 3,765 |
| 219. | 37.5 | GMG Community School District / 1,782 |
| 219. | 37.5 | Seymour Community School District / 2,410 |
| 219. | 37.5 | North Kossuth Community School District / 2,237 |
| 219. | 37.5 | AGWSR Community School District / 4,849 |
| 219. | 37.5 | Albia Community School District / 7,435 |
| 219. | 37.5 | Hampton-Dumont Community School District / 6,739 |
| 219. | 37.5 | BCLUW Community School District / 3,214 |
| 219. | 37.5 | Iowa Falls Community School District / 7,064 |
| 228. | 37.4 | Montezuma Community School District / 3,480 |
| 228. | 37.4 | Bedford Community School District / 3,075 |
| 230. | 37.3 | Corwith-Wesley Community School District / 921 |
| 230. | 37.3 | Woden-Crystal Lake Community School District / 912 |
| 230. | 37.3 | North Iowa Community School District / 3,147 |
| 230. | 37.3 | West Hancock Community School District / 4,119 |
| 230. | 37.3 | Garner-Hayfield Community School District / 3,852 |
| 230. | 37.3 | Titonka Consolidated School District / 897 |
| 230. | 37.3 | Forest City Community School District / 7,723 |
| 237. | 37.2 | Armstrong-Ringsted Community School District / 2,149 |
| 237. | 37.2 | Graettinger Community School District / 2,201 |
| 237. | 37.2 | A-H-S-T Community School District / 3,146 |
| 237. | 37.2 | Lake Mills Community School District / 3,576 |
| 237. | 37.2 | Spirit Lake Community School District / 8,022 |
| 237. | 37.2 | Tri-Center Community School District / 3,553 |
| 243. | 37.0 | Ruthven-Ayrshire Community School District / 1,409 |
| 243. | 37.0 | Spencer Community School District / 12,952 |
| 243. | 37.0 | Terril Community School District / 993 |
| 243. | 37.0 | Estherville Lincoln Central Community School District / 7,995 |
| 243. | 37.0 | Okoboji Community School District / 6,700 |
| 243. | 37.0 | Hartley-Melvin-Sanborn Community School District / 4,250 |
| 243. | 37.0 | Harris-Lake Park Community School District / 1,717 |
| 250. | 36.9 | Missouri Valley Community School District / 5,140 |
| 250. | 36.9 | South Clay Community School District / 910 |
| 252. | 36.8 | Clay Central-Everly Community School District / 2,322 |
| 253. | 36.7 | South O'Brien Community School District / 4,582 |
| 254. | 36.6 | Oskaloosa Community School District / 15,978 |
| 255. | 36.5 | Alden Community School District / 1,572 |
| 256. | 36.3 | Clearfield Community School District / 688 |
| 256. | 36.3 | Sidney Community School District / 1,811 |
| 258. | 36.2 | Indianola Community School District / 20,037 |
| 258. | 36.2 | Wayne Community School District / 3,819 |
| 258. | 36.2 | Central Decatur Community School District / 4,215 |
| 258. | 36.2 | Interstate 35 Community School District / 4,979 |
| 258. | 36.2 | Knoxville Community School District / 11,702 |
| 258. | 36.2 | Martensdale-St. Marys Community School District / 3,019 |
| 258. | 36.2 | Melcher-Dallas Community School District / 1,674 |
| 258. | 36.2 | Russell Community School District / 1,065 |
| 258. | 36.2 | Northeast Hamilton Community School District / 1,390 |
| 258. | 36.2 | Clarke Community School District / 8,023 |
| 258. | 36.2 | Winterset Community School District / 8,821 |
| 258. | 36.2 | Twin Cedars Community School District / 2,548 |
| 258. | 36.2 | Fremont-Mills Community School District / 2,550 |
| 258. | 36.2 | Lineville-Clio Community School District / 533 |
| 258. | 36.2 | Murray Community School District / 1,200 |
| 258. | 36.2 | Pella Community School District / 15,556 |
| 258. | 36.2 | Chariton Community School District / 8,330 |
| 258. | 36.2 | Southeast Warren Community School District / 3,145 |
| 258. | 36.2 | Pleasantville Community School District / 3,661 |
| 258. | 36.2 | Mormon Trail Community School District / 1,675 |
| 278. | 36.1 | Clarinda Community School District / 7,277 |
| 278. | 36.1 | Emmetsburg Community School District / 4,971 |
| 278. | 36.1 | Clarion-Goldfield Community School District / 4,653 |
| 278. | 36.1 | Creston Community School District / 9,674 |
| 278. | 36.1 | Nodaway Valley Community School District / 4,119 |
| 278. | 36.1 | Mount Ayr Community School District / 4,141 |
| 278. | 36.1 | Diagonal Community School District / 662 |
| 278. | 36.1 | West Bend-Mallard Community School District / 2,108 |
| 278. | 36.1 | Sentral Community School District / 1,028 |
| 278. | 36.1 | Algona Community School District / 9,417 |
| 278. | 36.1 | Prescott Community School District / 645 |
| 278. | 36.1 | Lenox Community School District / 2,032 |
| 278. | 36.1 | Lu Verne Community School District / 506 |
| 291. | 36.0 | South Page Community School District / 1,510 |
| 291. | 36.0 | Laurens-Marathon Community School District / 2,182 |
| 293. | 35.9 | Orient-Macksburg Community School District / 1,209 |
| 293. | 35.9 | Lamoni Community School District / 3,133 |
| 295. | 35.8 | Twin Rivers Community School District / 1,193 |
| 295. | 35.8 | Eagle Grove Community School District / 4,693 |
| 295. | 35.8 | North Mahaska Community School District / 2,811 |
| 295. | 35.8 | Pocahontas Area Community School District / 5,262 |
| 295. | 35.8 | Pomeroy-Palmer Community School District / 1,528 |
| 295. | 35.8 | Humboldt Community School District / 7,467 |
| 295. | 35.8 | Manson Northwest Webster Community School District / 4,280 |
| 295. | 35.8 | Rockwell City-Lytton Community School District / 3,246 |
| 295. | 35.8 | Gilmore City-Bradgate Community School District / 1,012 |
| 304. | 35.7 | Prairie Valley Community School District / 4,144 |
| 304. | 35.7 | Southern Cal Community School District / 2,962 |
| 304. | 35.7 | Shenandoah Community School District / 6,133 |
| 304. | 35.7 | Fort Dodge Community School District / 28,658 |
| 304. | 35.7 | Hubbard-Radcliffe Community School District / 2,896 |
| 309. | 35.6 | Hamburg Community School District / 1,478 |
| 309. | 35.6 | Farragut Community School District / 1,483 |
| 309. | 35.6 | Anita Community School District / 1,759 |
| 312. | 35.5 | East Union Community School District / 3,256 |
| 313. | 35.5 | Van Meter Community School District / 3,282 |
| 313. | 35.5 | Lynnville-Sully Community School District / 3,164 |
| 313. | 35.5 | Carlisle Community School District / 8,924 |
| 313. | 35.5 | Norwalk Community School District / 11,717 |
| 313. | 35.5 | Adair-Casey Community School District / 1,914 |
| 313. | 35.5 | PCM Community School District / 5,314 |
| 313. | 35.5 | Earlham Community School District / 3,358 |
| 320. | 35.4 | Ankeny Community School District / 53,970 |
| 320. | 35.4 | Waukee Community School District / 41,420 |
| 320. | 35.4 | Newton Community School District / 21,242 |
| 320. | 35.4 | Nevada Community School District / 8,919 |
| 320. | 35.4 | East Marshall Community School District / 4,093 |
| 320. | 35.4 | West Marshall Community School District / 4,951 |
| 320. | 35.4 | Adel-De Soto-Minburn Community School District / 8,067 |
| 320. | 35.4 | Webster City Community School District / 9,959 |
| 320. | 35.4 | Marshalltown Community School District / 30,396 |
| 320. | 35.4 | Bondurant-Farrar Community School District / 6,685 |
| 320. | 35.4 | West Des Moines Community School District / 65,738 |
| 320. | 35.4 | Baxter Community School District / 1,717 |
| 320. | 35.4 | Johnston Community School District / 34,241 |
| 320. | 35.4 | West Central Valley Community School District / 5,965 |
| 320. | 35.4 | Panorama Community School District / 4,575 |
| 320. | 35.4 | Colfax-Mingo Community School District / 4,262 |
| 320. | 35.4 | Grinnell-Newburg Community School District / 12,345 |
| 320. | 35.4 | Des Moines Independent Community School District / 205,612 |
| 320. | 35.4 | Southeast Polk Community School District / 33,956 |
| 320. | 35.4 | Dallas Center-Grimes Community School District / 10,190 |
| 320. | 35.4 | North Polk Community School District / 6,798 |
| 320. | 35.4 | Urbandale Community School District / 20,873 |
| 320. | 35.4 | Guthrie Center Community School District / 2,625 |
| 320. | 35.4 | Colo-Nesco Community School District / 3,044 |
| 320. | 35.4 | Collins-Maxwell Community School District / 2,689 |
| 320. | 35.4 | Saydel Community School District / 8,103 |
| 346. | 35.3 | Paton-Churdan Community School District / 1,112 |
| 346. | 35.3 | Stratford Community School District / 1,209 |
| 346. | 35.3 | Woodward-Granger Community School District / 5,287 |
| 346. | 35.3 | Ogden Community School District / 4,003 |
| 346. | 35.3 | Perry Community School District / 10,091 |
| 346. | 35.3 | Gilbert Community School District / 6,714 |
| 346. | 35.3 | East Greene Community School District / 1,714 |
| 346. | 35.3 | Glidden-Ralston Community School District / 2,080 |
| 346. | 35.3 | Southeast Webster-Grand Community School District / 3,156 |
| 346. | 35.3 | United Community School District / 2,145 |
| 346. | 35.3 | Coon Rapids-Bayard Community School District / 2,822 |
| 346. | 35.3 | Jefferson-Scranton Community School District / 6,062 |
| 346. | 35.3 | Ballard Community School District / 7,081 |
| 346. | 35.3 | Boone Community School District / 14,429 |
| 346. | 35.3 | Madrid Community School District / 3,512 |
| 346. | 35.3 | Ames Community School District / 58,297 |
| 362. | 35.2 | South Hamilton Community School District / 3,602 |
| 362. | 35.2 | Roland-Story Community School District / 5,841 |
Please note that we only rank locations with 'Air Quality Index' data. The rank above might not be a complete list. Locations without 'Air Quality Index' data are not listed.
