Air Quality
(AQI)
Protect Your Health
Good
(0-50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate
(51-100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for
Sensitive Groups
(101-150)
Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy
(151-200)
Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very
Unhealthy
(Alert)
(201-300)
Health alert: everyone may experience more serious health effects.