Current U.S. Air Quality Index
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Retrieving the latest air quality information.
Dominant pollutant
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24-hour trend
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Updated
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Air Quality
Air Quality Dashboard
Current U.S. AQI, pollutant concentrations, and a 5-day outlook.
24-Hour AQI Trend
Hourly U.S. AQI forecast
Good Moderate Sensitive Unhealthy Very unhealthy Hazardous
0–50 Good
Air quality is satisfactory, and air pollution poses little or no risk.
51–100 Moderate
Air quality is acceptable. People unusually sensitive to air pollution may be at risk.
101–150 Unhealthy for Sensitive Groups
Sensitive groups may experience health effects. The general public is less likely to be affected.
151–200 Unhealthy
Some members of the public may experience health effects. Sensitive groups may experience more serious effects.
201–300 Very Unhealthy
Health alert: the risk of health effects is increased for everyone.
301+ Hazardous
Health warning of emergency conditions: everyone is more likely to be affected.
Current Pollutant Details
Concentrations in µg/m³5-Day Outlook
Daily U.S. AQIAQI and pollutant data supplied by the Visual Crossing Timeline Weather API. Health categories follow the U.S. EPA AQI scale. Forecast values may change.