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 | |
|---|---|---|---|---|---|---|
| Seminole | FL | 82.1 | Grade B | 6.1 | Stable | View |
| Safety Harbor | FL | 82.1 | Grade B | 6.1 | Stable | View |
| Goleta | CA | 82 | Grade B | 6.2 | Worsening β | View |
| Spanish Fork | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Provo | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Orem | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Pleasant Grove | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Springville | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Isla Vista | CA | 82 | Grade B | 6.2 | Worsening β | View |
| Payson | UT | 82 | Grade B | 6.2 | Worsening β | View |
| Thousand Oaks | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Stuart | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Oxnard | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Port Saint Lucie | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Camarillo | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Jupiter | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Fort Pierce | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Palm City | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Vero Beach South | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Port Hueneme | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Agoura Hills | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Agoura | CA | 81.8 | Grade B | 6.3 | Improving β | View |
| Florida Ridge | FL | 81.8 | Grade B | 6.3 | Stable | View |
| Redding | CA | 81.5 | Grade B | 6 | Improving β | View |
| New Haven | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Hamden | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| West Haven | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Shelton | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Branford | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| East Haven | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| North Haven | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Guilford | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Madison | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Ansonia | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Wallingford Center | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Wallingford | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Seymour | CT | 81.5 | Grade B | 6.4 | Improving β | View |
| Missoula | MT | 81.4 | Grade B | 5.4 | Improving β | View |
| Duluth | MN | 81.3 | Grade B | 5.9 | Stable | View |
| Superior | MN | 81.3 | Grade B | 5.9 | Stable | View |
| Dover | DE | 81.2 | Grade B | 6.4 | Stable | View |
| Normal | IL | 81.2 | Grade B | 6.4 | Improving β | View |
| Bloomington | IN | 81.2 | Grade B | 6.5 | Improving β | View |
| Bloomington | IL | 81.2 | Grade B | 6.4 | Improving β | View |
| Plainfield | IN | 81.2 | Grade B | 6.5 | Improving β | View |
| Easton | DE | 81.2 | Grade B | 6.4 | Stable | View |
| Avon | IN | 81.2 | Grade B | 6.5 | Improving β | View |
| Hartford | CT | 81.1 | Grade B | 6.4 | Improving β | View |
| Toms River | NJ | 81.1 | Grade B | 6.4 | Stable | View |
| Cranston | RI | 81.1 | Grade B | 6.4 | Improving β | View |