X  Close Official AQ sensor station - Aspen PM, Colorado, USA

  PM2.5 PM10 O3 AQI classification       
Current 9 8 6 9 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
05-04-20261522256111625Good Air Quality
     
05-05-20261421246131724Good Air Quality
     
05-06-202691320351020Good Air Quality
     
05-07-202610131635816Good Air Quality
     
05-08-2026161920891120Good Air Quality
     
05-09-20261821268101326Good Air Quality
     
05-10-202622283110131531Good Air Quality
     
05-11-202630323413151734Good Air Quality
     
            

classification AQI The health effects should be based on 24 hours average values only.
Good Air Quality 0-50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate Air Quality 50-100 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 some 100-150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy Air Quality 150-200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 200-300 Health alert: everyone may experience more serious health effects
Hazardous Air Quality > 300 Health warnings of emergency conditions. The entire population is more likely to be affected
 More information:  EPA Air Quality Index      Sensor data captured at: 05-06-2026 4:00 pm