Air Quality Index (AQI) in United States 🇺🇸
Live Air Quality Index (AQI) and PM2.5 Levels in United States
Real-time air quality data and environmental pollution metrics are currently updating for this region.
United States Air Quality: Major Cities Index
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* Air Quality Index (AQI) data for United States is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.
Browse Air Quality in United States by cities in alphabetical order:
Air Quality Scales & Resources
Wondering what these AQI numbers mean for your health? Our worldwide air quality guide explains every level of the AQI, PM2.5, PM10, ozone, NO2, CO and SO2 scales, with practical health advice for each range.
→ Understanding Air Quality Levels: read the full guide