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

  PM2.5 PM10 O3 AQI classification       
Current 5 5 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
09-11-20262435457121545Good Air Quality
     
09-12-20262030408163140Good Air Quality
     
09-13-20265132224722Good Air Quality
     
09-14-202613192346723Good Air Quality
     
09-15-2026112334371034Good Air Quality
     
09-16-20266111635516Good Air Quality
     
09-17-202610142335723Good Air Quality
     
09-18-20262140576111857Moderate 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: 09-13-2026 12:00