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 | |
|---|---|---|---|---|---|---|
| Berea | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Mayfield Heights | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Brook Park | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Thomasville | FL | 70.3 | Grade B | 8.3 | Worsening β | View |
| Clark-Fulton | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Detroit-Shoreway | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| East Cleveland | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Fairview Park | OH | 70.3 | Grade B | 8.3 | Improving β | View |
| Yuba City | CA | 70.1 | Grade B | 7.8 | Improving β | View |
| Grand Rapids | MI | 70.1 | Grade B | 8.4 | Worsening β | View |
| Wyoming | MI | 70.1 | Grade B | 8.4 | Worsening β | View |
| Kentwood | MI | 70.1 | Grade B | 8.4 | Worsening β | View |
| Forest Hills | MI | 70.1 | Grade B | 8.4 | Worsening β | View |
| Walker | MI | 70.1 | Grade B | 8.4 | Worsening β | View |
| Linda | CA | 70.1 | Grade B | 7.8 | Improving β | 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 β | View |
| Knoxville | TN | 69.8 | Grade C | 8.4 | Stable | View |
| East Chattanooga | TN | 69.8 | Grade C | 8.4 | Worsening β | 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 β | 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 β | 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 β | View |