Explore Air Quality by City
Your entry point to US city air quality data. Check AQI today, compare median AQI in 2021, and see unhealthy days per year for any city. Browse EPA-based Clean Air Scores, see how cities compare in our National Rankings, and learn about our data sources in the Methodology.
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| City | State | Score | Grade | PM2.5 (Ann.) | Trend | |
|---|---|---|---|---|---|---|
| Lemon Grove | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| Rancho San Diego | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| Lakeside | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| Winter Gardens | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| Ramona | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| Casa de Oro-Mount Helix | CA | 65.2 | Grade C | 9.1 | Worsening β | View |
| San Diego | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| Terre Haute | IN | 64.7 | Grade C | 9 | Stable | View |
| Oceanside | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| Carlsbad | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| Encinitas | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| La Jolla | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| Coronado | CA | 64.7 | Grade C | 9.3 | Worsening β | View |
| Charleston | IN | 64.7 | Grade C | 9 | Stable | View |
| Victorville | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Moore | OK | 64.6 | Grade C | 9 | Stable | View |
| Norman | OK | 64.6 | Grade C | 9 | Stable | View |
| Hesperia | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Apple Valley | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Adelanto | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Shawnee | OK | 64.6 | Grade C | 9 | Stable | View |
| Barstow Heights | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Barstow | CA | 64.6 | Grade C | 9 | Worsening β | View |
| Chickasha | OK | 64.6 | Grade C | 9 | Stable | View |
| Hattiesburg | MS | 64.3 | Grade C | 9.1 | Worsening β | View |
| Laurel | MS | 64.3 | Grade C | 9.1 | Worsening β | View |
| Kansas City | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Overland Park | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Olathe | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Saint Joseph | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Shawnee | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Lenexa | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Leavenworth | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Gardner | KS | 64.1 | Grade C | 9.1 | Stable | View |
| Gainesville | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Athens | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Lawrenceville | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Sugar Hill | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Snellville | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Suwanee | GA | 63.7 | Grade C | 9.5 | Worsening β | View |
| Texarkana | TX | 63.6 | Grade C | 9.4 | Stable | View |
| Texarkana | TX | 63.6 | Grade C | 9.4 | Stable | View |
| Eagle Pass | TX | 63.3 | Grade C | 9.2 | Worsening β | View |
| San Antonio | TX | 63 | Grade C | 8.9 | Stable | View |
| New Braunfels | TX | 63 | Grade C | 8.9 | Stable | View |
| Schertz | TX | 63 | Grade C | 8.9 | Stable | View |
| Seguin | TX | 63 | Grade C | 8.9 | Stable | View |
| Cibolo | TX | 63 | Grade C | 8.9 | Stable | View |
| Converse | TX | 63 | Grade C | 8.9 | Stable | View |
| Canyon Lake | TX | 63 | Grade C | 8.9 | Stable | View |