
ALT Understanding the Air Quality Index (AQI). Good is AQI 0-50, no health impacts expected. Moderate is AQI 51-100, very sensitive people may wish to limit outdoor exertion. Unhealthy for Sensitive Groups is AQI 101-150, sensitive people should limit outdoor exertion. Unhealthy is AQI 151-200, everyone should limit exertion outdoors. Very Unhealthy is AQI 201-300, sensitive people should avoid all outdoor activity. Hazardous is AQI 301-500, everyone should avoid all outdoor activity.

ALT Understanding the Air Quality Index (AQI). 0-50: No health impacts expected. 51-100: Very sensitive people may wish to limit outdoor exertion. 101-150: Sensitive people should limit outdoor exertion. 151-200: Everyone should limit exertion outdoors. 201-300: Sensitive people should avoid all outdoor activity. 301-500: Everyone should avoid all outdoor activity.































