Aspen Today
September 22, 2023
2:22 AM
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Air Quality Index
(AQI) Values 		Levels of Health Concern
0-50 Good
51-100 Moderate
101-150 Unhealthy for Sensitive Groups
151 to 200 Unhealthy
201 to 300 Very Unhealthy
301 to 500 Hazardous

The Air Quality Index (AQI) The Air Quality Index (AQI) is an index for reporting how clean or polluted your air is and is generated using local air quality monitoring data.

The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.
To learn what the direct measurements are for today, click on a parameter: