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Explore historical PM2.5 patterns, available local observations, and the context behind each city’s score. 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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Local observations and historical context for major cities.
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| City | State | Score | Grade | PM2.5 (Ann.) | Trend | |
|---|---|---|---|---|---|---|
| Lemon Grove | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| Rancho San Diego | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| Lakeside | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| Winter Gardens | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| Ramona | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| Casa de Oro-Mount Helix | CA | 65.2 | Grade C | 9.1 | Worsening ↑ | View |
| San Diego | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| Terre Haute | IN | 64.7 | Grade C | 9 | Stable | View |
| Oceanside | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| Carlsbad | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| Encinitas | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| La Jolla | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| Coronado | CA | 64.7 | Grade C | 9.3 | Worsening ↑ | View |
| Charleston | IN | 64.7 | Grade C | 9 | Stable | View |
| Victorville | CA | 64.6 | Grade C | 9 | Worsening ↑ | 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 ↑ | View |
| Apple Valley | CA | 64.6 | Grade C | 9 | Worsening ↑ | View |
| Adelanto | CA | 64.6 | Grade C | 9 | Worsening ↑ | View |
| Shawnee | OK | 64.6 | Grade C | 9 | Stable | View |
| Barstow Heights | CA | 64.6 | Grade C | 9 | Worsening ↑ | View |
| Barstow | CA | 64.6 | Grade C | 9 | Worsening ↑ | View |
| Chickasha | OK | 64.6 | Grade C | 9 | Stable | View |
| Hattiesburg | MS | 64.3 | Grade C | 9.1 | Worsening ↑ | View |
| Laurel | MS | 64.3 | Grade C | 9.1 | Worsening ↑ | 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 ↑ | View |
| Athens | GA | 63.7 | Grade C | 9.5 | Worsening ↑ | View |
| Lawrenceville | GA | 63.7 | Grade C | 9.5 | Worsening ↑ | View |
| Sugar Hill | GA | 63.7 | Grade C | 9.5 | Worsening ↑ | View |
| Snellville | GA | 63.7 | Grade C | 9.5 | Worsening ↑ | View |
| Suwanee | GA | 63.7 | Grade C | 9.5 | Worsening ↑ | 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 ↑ | 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 |