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 | |
|---|---|---|---|---|---|---|
| Concord | MO | 80.7 | Grade B | 6.5 | Stable | View |
| Tucson | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Jackson | TN | 80.6 | Grade B | 6.5 | Improving β | View |
| Casas Adobes | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Catalina Foothills | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Oro Valley | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Marana | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Drexel Heights | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Sahuarita | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Green Valley | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Tanque Verde | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Flowing Wells | AZ | 80.6 | Grade B | 6.5 | Worsening β | View |
| Fort Collins | CO | 80.5 | Grade B | 6.5 | Stable | View |
| New Albany | IN | 80.5 | Grade B | 6.6 | Improving β | View |
| Columbia | TN | 80.5 | Grade B | 6.5 | Stable | View |
| Loveland | CO | 80.5 | Grade B | 6.5 | Stable | View |
| Spring Hill | TN | 80.5 | Grade B | 6.5 | Stable | View |
| Shelbyville | TN | 80.5 | Grade B | 6.5 | Stable | View |
| Ashland | KY | 80.4 | Grade B | 6.6 | Improving β | View |
| Jenison | MI | 80.4 | Grade B | 6.5 | Improving β | View |
| Ironville | KY | 80.4 | Grade B | 6.6 | Improving β | View |
| Meads | KY | 80.4 | Grade B | 6.6 | Improving β | View |
| Allendale | MI | 80.4 | Grade B | 6.5 | Improving β | View |
| Lansing | MI | 80.3 | Grade B | 6.6 | Stable | View |
| East Lansing | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Jackson | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Holt | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Waverly | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Okemos | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Haslett | MI | 80.3 | Grade B | 6.6 | Stable | View |
| Bountiful | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Hampton | VA | 80.2 | Grade B | 6.6 | Stable | View |
| Newport News | VA | 80.2 | Grade B | 6.6 | Stable | View |
| East Hampton | VA | 80.2 | Grade B | 6.6 | Stable | View |
| Layton | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Roy | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Clearfield | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Kaysville | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Syracuse | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Farmington | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Clinton | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| North Salt Lake | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| South Ogden | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Centerville | UT | 80.2 | Grade B | 6.5 | Worsening β | View |
| Baltimore | MD | 80.1 | Grade B | 6.6 | Improving β | View |
| Columbia | MD | 80.1 | Grade B | 6.6 | Improving β | View |
| Glen Burnie | MD | 80.1 | Grade B | 6.6 | Improving β | View |
| Ellicott City | MD | 80.1 | Grade B | 6.6 | Improving β | View |
| Dundalk | MD | 80.1 | Grade B | 6.6 | Improving β | View |
| Severn | MD | 80.1 | Grade B | 6.6 | Improving β | View |