X  Close Official AQ sensor station - Ruby St, Ellensburg, Washington, USA

  PM2.5 PM10 O3 AQI classification       
Current 25 25 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
05-27-2026152333681133Good Air Quality
     
05-28-20262633449122644Good Air Quality
     
05-29-202631033151133Good Air Quality
     
05-30-2026591334513Good Air Quality
     
05-31-20266101434614Good Air Quality
     
06-01-20269131667916Good Air Quality
     
06-02-20261116209131520Good Air Quality
     
06-03-20261828308253030Good 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: 05-30-2026 00:00