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 | |
|---|---|---|---|---|---|---|
| Linden | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Marlboro | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| New Berlin | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| Brookfield | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| Menomonee Falls | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| West Bend | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| Long Branch | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Westfield | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Voorhees | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Muskego | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| South Plainfield | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Carteret | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Watertown | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| Old Bridge | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Scotch Plains | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Terrytown | LA | 77.4 | Grade B | 7.1 | Improving β | View |
| South Old Bridge | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Cranford | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| North Plainfield | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Somerset | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Summit | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Great Kills | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Woodrow | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Germantown | WI | 77.4 | Grade B | 7.1 | Improving β | View |
| Woodbridge | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Rossville | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Iselin | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Morristown | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Colonia | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Tinton Falls | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Avenel | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| South River | NJ | 77.4 | Grade B | 7.1 | Stable | View |
| Flint | MI | 77.3 | Grade B | 6.8 | Stable | View |
| Youngstown | OH | 77.3 | Grade B | 7.1 | Improving β | View |
| Rapid City | SD | 77.3 | Grade B | 6.9 | Worsening β | View |
| Boardman | OH | 77.3 | Grade B | 7.1 | Improving β | View |
| Austintown | OH | 77.3 | Grade B | 7.1 | Improving β | View |
| Burton | MI | 77.3 | Grade B | 6.8 | Stable | View |
| New Castle | OH | 77.3 | Grade B | 7.1 | Improving β | View |
| Allen Park | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Westland | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Taylor | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Lincoln Park | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Southgate | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Garden City | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Wyandotte | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Inkster | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Romulus | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Trenton | MI | 77.2 | Grade B | 7.1 | Improving β | View |
| Wayne | MI | 77.2 | Grade B | 7.1 | Improving β | View |