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 | |
|---|---|---|---|---|---|---|
| Lodi | CA | 49 | Grade D | 10.2 | Worsening β | View |
| Cypress | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Mission Bend | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Rosenberg | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Galt | CA | 49 | Grade D | 10.2 | Worsening β | View |
| Fresno | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Bellaire | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Stafford | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Cinco Ranch | TX | 49 | Grade D | 11.2 | Worsening β | View |
| Calexico | CA | 46 | Grade D | 10.1 | Stable | View |
| Brownsville | TX | 45.6 | Grade D | 10.2 | Stable | View |
| Harlingen | TX | 45.6 | Grade D | 10.2 | Stable | View |
| San Benito | TX | 45.6 | Grade D | 10.2 | Stable | View |
| Clovis | CA | 45.4 | Grade D | 10.7 | Worsening β | View |
| Sanger | CA | 45.4 | Grade D | 10.7 | Worsening β | View |
| Long Beach | CA | 45.3 | Grade D | 12.3 | Worsening β | View |
| San Pedro | CA | 45.3 | Grade D | 12.3 | Worsening β | View |
| Rancho Palos Verdes | CA | 45.3 | Grade D | 12.3 | Worsening β | View |
| Seal Beach | CA | 45.3 | Grade D | 12.3 | Worsening β | View |
| Lomita | CA | 45.3 | Grade D | 12.3 | Worsening β | View |
| Nogales | AZ | 45.1 | Grade D | 10.6 | Worsening β | View |
| Sierra Vista | AZ | 45.1 | Grade D | 10.6 | Worsening β | View |
| Rio Rico | AZ | 45.1 | Grade D | 10.6 | Worsening β | View |
| Corpus Christi | TX | 45 | Grade D | 10.5 | Worsening β | View |
| Kingsville | TX | 45 | Grade D | 10.5 | Worsening β | View |
| Alice | TX | 45 | Grade D | 10.5 | Worsening β | View |
| Conroe | TX | 43 | Grade D | 12.1 | Improving β | View |
| The Woodlands | TX | 43 | Grade D | 12.1 | Improving β | View |
| Spring | TX | 43 | Grade D | 12.1 | Improving β | View |
| Huntsville | TX | 43 | Grade D | 12.1 | Improving β | View |
| Laredo | TX | 41.4 | Grade D | 10.4 | Stable | View |
| Los Angeles | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Glendale | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Hollywood | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Pasadena | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Van Nuys | CA | 39.6 | Grade F | 13 | Worsening β | View |
| East Los Angeles | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Koreatown | CA | 39.6 | Grade F | 13 | Worsening β | View |
| El Monte | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Inglewood | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Burbank | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Universal City | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Santa Monica | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Boyle Heights | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Alhambra | CA | 39.6 | Grade F | 13 | Worsening β | View |
| North Hollywood | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Baldwin Park | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Montebello | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Monterey Park | CA | 39.6 | Grade F | 13 | Worsening β | View |
| Valley Glen | CA | 39.6 | Grade F | 13 | Worsening β | View |