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 | |
|---|---|---|---|---|---|---|
| Southfield | MI | 73.5 | Grade B | 7.8 | Stable | View |
| West Bloomfield Township | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Pontiac | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Royal Oak | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Novi | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Tinley Park | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Oak Lawn | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Calumet City | IN | 73.5 | Grade B | 7.8 | Improving β | View |
| Chicago Heights | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Madison Heights | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Burbank | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Schererville | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Oak Forest | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Wheeling | OH | 73.5 | Grade B | 7.8 | Improving β | View |
| Harvey | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Blue Island | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Dolton | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Munster | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Highland | IN | 73.5 | Grade B | 7.8 | Improving β | View |
| Morgan Park | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Auburn Hills | MI | 73.5 | Grade B | 7.8 | Stable | View |
| South Holland | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Park Forest | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Birmingham | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Ferndale | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Evergreen Park | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Homewood | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Alsip | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Matteson | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Mount Greenwood | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Palos Hills | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Country Club Hills | IL | 73.5 | Grade B | 7.8 | Improving β | View |
| Hazel Park | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Mount Clemens | MI | 73.5 | Grade B | 7.8 | Stable | View |
| Joliet | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| Denton | TX | 73.4 | Grade B | 7.7 | Stable | View |
| McKinney | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Frisco | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Lewisville | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Flower Mound | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Orland Park | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| Plainfield | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| The Colony | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Sherman | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Romeoville | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| Little Elm | TX | 73.4 | Grade B | 7.7 | Stable | View |
| Kankakee | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| New Lenox | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| Lockport | IL | 73.4 | Grade B | 7.8 | Improving β | View |
| Homer Glen | IL | 73.4 | Grade B | 7.8 | Improving β | View |