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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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| City | State | Score | Grade | PM2.5 (Ann.) | Trend | |
|---|---|---|---|---|---|---|
| Berea | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Mayfield Heights | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Brook Park | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Thomasville | FL | 70.3 | Grade B | 8.3 | Worsening ↑ | View |
| Clark-Fulton | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Detroit-Shoreway | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| East Cleveland | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Fairview Park | OH | 70.3 | Grade B | 8.3 | Improving ↓ | View |
| Yuba City | CA | 70.1 | Grade B | 7.8 | Improving ↓ | View |
| Grand Rapids | MI | 70.1 | Grade B | 8.4 | Worsening ↑ | View |
| Wyoming | MI | 70.1 | Grade B | 8.4 | Worsening ↑ | View |
| Kentwood | MI | 70.1 | Grade B | 8.4 | Worsening ↑ | View |
| Forest Hills | MI | 70.1 | Grade B | 8.4 | Worsening ↑ | View |
| Walker | MI | 70.1 | Grade B | 8.4 | Worsening ↑ | View |
| Linda | CA | 70.1 | Grade B | 7.8 | Improving ↓ | View |
| Savannah | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Elkhart | IN | 69.9 | Grade C | 8.1 | Stable | View |
| Hilton Head Island | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Hilton Head | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Hinesville | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Goshen | IN | 69.9 | Grade C | 8.1 | Stable | View |
| Statesboro | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Granger | IN | 69.9 | Grade C | 8.1 | Stable | View |
| Pooler | GA | 69.9 | Grade C | 8.2 | Stable | View |
| Bluffton | GA | 69.9 | Grade C | 8.2 | Stable | View |
| San Jose | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Chalmette | LA | 69.8 | Grade C | 8.2 | Stable | View |
| Chattanooga | TN | 69.8 | Grade C | 8.4 | Worsening ↑ | View |
| Knoxville | TN | 69.8 | Grade C | 8.4 | Stable | View |
| East Chattanooga | TN | 69.8 | Grade C | 8.4 | Worsening ↑ | View |
| Sunnyvale | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Santa Clara | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Redwood City | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Mountain View | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Milpitas | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Palo Alto | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Cupertino | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Cleveland | TN | 69.8 | Grade C | 8.4 | Worsening ↑ | View |
| Morgan Hill | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Campbell | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Dalton | TN | 69.8 | Grade C | 8.4 | Worsening ↑ | View |
| Menlo Park | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Saratoga | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Los Gatos | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Los Altos | CA | 69.8 | Grade C | 8.3 | Stable | View |
| East Palo Alto | CA | 69.8 | Grade C | 8.3 | Stable | View |
| Morristown | TN | 69.8 | Grade C | 8.4 | Stable | View |
| Oak Ridge | TN | 69.8 | Grade C | 8.4 | Stable | View |
| Slidell | LA | 69.8 | Grade C | 8.2 | Stable | View |
| East Ridge | TN | 69.8 | Grade C | 8.4 | Worsening ↑ | View |