Understanding Air Quality Index
Good
Air quality is satisfactory, and air pollution poses little or no risk.
Moderate
Air quality is acceptable. However, there may be a risk for some people.
Unhealthy for Sensitive Groups
Members of sensitive groups may experience health effects.
Unhealthy
Everyone may begin to experience health effects.
Very Unhealthy
Health alert: everyone may experience more serious health effects.
Hazardous
Health warnings of emergency conditions. The entire population is likely to be affected.
The Air Quality Index (AQI) is a scale from 0 to 500 that measures air pollution levels. Poor air quality can cause respiratory issues, cardiovascular problems, and other health concerns. Rankings are updated hourly to help you stay informed.
Source: US EPA Air Quality Index
Last updated: 39 minutes ago
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