2017-2025
World's most polluted cities
The most polluted cities according to data aggregated from over 80,000 data points.
2025
World Air Quality Report
2025
World Air Quality Report
PM2.5 legend (concentration in μg/m3 categorized by WHO guideline)
0-5Meets WHO guideline
5.1-10Exceeds by 1 to 2 times
10.1-15Exceeds by 2 to 3 times
15.1-25Exceeds by 3 to 5 times
25.1-35Exceeds by 5 to 7 times
35.1-50Exceeds by 7 to 10 times
>50.1Exceeds by over 10 times
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2214 |  Helotes USA | 6.6 | 8.4 | 9.3 | 9.1 | 11 | 9.9 | 10.9 | -- | -- |
| 2215 | Lindon USA | 6.6 | 6.2 | 5.2 | 6.1 | 9.1 | 8 | 6 | 6.7 | 7.4 |
| 2216 | Caledonia USA | 6.6 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2217 | Big Stone Gap USA | 6.6 | 7.3 | 7.1 | -- | -- | -- | -- | -- | -- |
| 2218 | Charlottesville USA | 6.6 | 6.6 | 9.4 | 7.7 | 7.7 | 6.9 | -- | -- | -- |
| 2219 | Chesapeake USA | 6.6 | 6.5 | 9 | -- | -- | -- | -- | -- | -- |
| 2220 | Fairfax Station USA | 6.6 | 6.1 | 9 | 7.5 | -- | -- | -- | -- | -- |
| 2221 | Lake Monticello USA | 6.6 | 6.4 | 10.8 | -- | -- | -- | -- | -- | -- |
| 2222 | Lakeside USA | 6.6 | 6.7 | 9.3 | 7.7 | -- | -- | -- | -- | -- |
| 2223 | Springfield USA | 6.6 | 6.5 | 10 | 9.4 | 12.6 | -- | -- | -- | -- |
| 2224 | Country Homes USA | 6.6 | 6.1 | 12.8 | 14.6 | 14.2 | -- | -- | -- | -- |
| 2225 | Finley USA | 6.6 | 7.9 | -- | -- | -- | -- | -- | -- | -- |
| 2226 | Belle USA | 6.6 | 7.9 | 7.7 | -- | -- | -- | -- | -- | -- |
| 2227 | Hudson USA | 6.6 | 6.5 | 12.6 | 8.7 | 9.7 | -- | -- | -- | -- |
| 2228 |  Bellevue Canada | 6.5 | 5.1 | 4 | -- | -- | -- | -- | -- | -- |
| 2229 | Didsbury Canada | 6.5 | 6.5 | 11.2 | 6.4 | 12 | -- | 8.1 | -- | -- |
| 2230 | Anmore Canada | 6.5 | 5.5 | 6.9 | -- | -- | -- | -- | -- | -- |
| 2231 | Temiscaming Canada | 6.5 | 5.6 | 11.5 | 9.7 | 11 | -- | -- | -- | -- |
| 2232 | Mobile USA | 6.5 | 7 | 11.2 | 10.6 | 10.4 | 10.3 | 11.9 | -- | -- |
| 2233 | Chandler USA | 6.5 | 6.4 | 4.8 | 4.8 | 7.2 | 10.4 | 5.3 | -- | -- |
| 2234 | Litchfield Park USA | 6.5 | 8.7 | -- | -- | -- | -- | -- | -- | -- |
| 2235 | Tempe USA | 6.5 | 6.3 | 4.8 | 4.5 | 6.5 | 7.1 | 5.6 | 7.8 | 7.7 |
| 2236 | Yuma USA | 6.5 | 6.9 | 5.7 | 3.6 | 8.8 | 9 | 7.5 | 8.5 | 8.6 |
| 2237 | Centerville USA | 6.5 | 6.1 | -- | -- | -- | -- | -- | -- | -- |
| 2238 | Cottonwood USA | 6.5 | 6.2 | 7.1 | 6.7 | 15.4 | 18.4 | 7.8 | -- | -- |
| 2239 | Elk Grove USA | 6.5 | 6.5 | 7.9 | 9.9 | 11.5 | 13 | 6.2 | 12.3 | 8.8 |
| 2240 | La Quinta USA | 6.5 | 6.2 | 6.4 | 5 | 7.7 | 8.5 | 7.3 | -- | -- |
| 2241 | Lincoln USA | 6.5 | 5.8 | 7.1 | 9 | 11.9 | 12.7 | 7.2 | -- | -- |
| 2242 | Murrieta USA | 6.5 | 6 | 6.6 | 6 | 8.3 | 10.2 | 8.8 | -- | -- |
| 2243 | Seeley USA | 6.5 | 10.2 | 6.3 | 9.8 | 6.9 | -- | -- | -- | -- |
| 2244 | Vineyard USA | 6.5 | 6.5 | -- | -- | -- | -- | -- | -- | -- |
| 2245 | Delta USA | 6.5 | 6.2 | 6 | 5.4 | 9.3 | -- | 5.7 | 6.8 | 7.1 |
| 2246 | New Haven USA | 6.5 | 6.1 | 9.4 | 7.8 | 8 | 7.9 | 8 | 7.4 | 8 |
| 2247 | Woodbury USA | 6.5 | 5.5 | 10.2 | -- | -- | -- | -- | -- | -- |
| 2248 | Lake Mary USA | 6.5 | 7.5 | 7.1 | 7.4 | 7.6 | 7.3 | 7 | -- | -- |
| 2249 | Royal Palm Beach USA | 6.5 | 6.3 | 7.5 | 7.5 | 7.8 | 13.4 | 22.6 | -- | -- |
| 2250 | Venice USA | 6.5 | 7.2 | 8.6 | 8.2 | 8.2 | 8.3 | 7.9 | 8.3 | 9.1 |
| 2251 | Star USA | 6.5 | 11 | 6.9 | 9.4 | 13 | 11.4 | 7.4 | -- | -- |
| 2252 | Highland USA | 6.5 | 7.1 | 11.5 | 10.9 | 15.3 | -- | -- | -- | -- |
| 2253 | Emporia USA | 6.5 | 5.9 | 9 | 5.9 | -- | -- | -- | -- | -- |
| 2254 | Hazard USA | 6.5 | 6.7 | 9.7 | 8.4 | 8.5 | 7.3 | 8 | 9.2 | 8.9 |
| 2255 | Morgan USA | 6.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2256 | Lake Charles USA | 6.5 | 6.8 | 10 | 10.2 | 11.6 | 9.1 | -- | -- | -- |
| 2257 | New Orleans USA | 6.5 | 6.6 | 8.6 | 8.3 | 9.2 | 9 | 10.2 | 9.4 | 9.5 |
| 2258 | Eliot USA | 6.5 | 6.1 | 9 | -- | -- | -- | -- | -- | -- |
| 2259 | Damascus USA | 6.5 | 5.9 | 10.9 | 5.7 | -- | -- | -- | -- | -- |
| 2260 | Galesville USA | 6.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2261 | Amesbury USA | 6.5 | 5.7 | 8.6 | 6 | 7.3 | 8.5 | 8.7 | -- | -- |
| 2262 | Arlington USA | 6.5 | 5.9 | 7.3 | 6.9 | 9 | -- | -- | -- | -- |
| 2263 | Grafton USA | 6.5 | 7 | -- | -- | -- | -- | -- | -- | -- |
