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 | |
|---|---|---|---|---|---|---|
| Oxon Hill-Glassmanor | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Oakton | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Oak Hill | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| St. Charles | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| West Falls Church | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Fredericksburg | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Sterling | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Herndon | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| South Riding | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Fairfax | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Fort Washington | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Baileys Crossroads | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Chantilly | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Lincolnia | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| West Springfield | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Woodlawn | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Rose Hill | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Tysons Corner | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Montclair | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Camp Springs | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Lorton | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Franconia | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Oxon Hill | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Culpeper | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Glassmanor | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Idylwood | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Vienna | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Hillcrest Heights | VA | 79.4 | Grade B | 6.8 | Improving β | View |
| Eau Claire | WI | 79.3 | Grade B | 6.5 | Improving β | View |
| Daytona Beach | FL | 79.2 | Grade B | 6.8 | Stable | View |
| Winter Park | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Orlando | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Deltona | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Palm Coast | FL | 79.2 | Grade B | 6.8 | Stable | View |
| Alafaya | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Kissimmee | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Pine Hills | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Port Orange | FL | 79.2 | Grade B | 6.8 | Stable | View |
| Sanford | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Poinciana | FL | 79.2 | Grade B | 6.5 | Stable | View |
| The Villages | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Apopka | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Titusville | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Ocoee | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Altamonte Springs | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Ormond Beach | FL | 79.2 | Grade B | 6.8 | Stable | View |
| Winter Garden | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Oviedo | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Saint Cloud | FL | 79.2 | Grade B | 6.5 | Stable | View |
| Winter Springs | FL | 79.2 | Grade B | 6.5 | Stable | View |