Explore Air
Washington, D.C.
View from the Netherlands Carillon Looking East  •
updated 10/22/2009 9:15 PM EDT  •
Visual range is approximately 69 miles
View from the Netherlands Carillon Looking East, Washington, D.C.
Current Ozone at McMillan Reservoir
as of 10/22/2009 08:00 PM EDT  •  
 Ozone
        
Current 1-hour average concentration
 9 ppb
Current 8-hour average concentration
 18 ppb
Good Moderate Unhealthy for Sensitive Groups Unhealthy Very
Unhealthy
0 60 76 96 116 ppb
 
Current Particulate Matter at McMillan Reservoir
as of 10/22/2009 08:00 PM EDT  •  
 Particulate Matter
       Details   
Current 1-hour average PM2.5 concentration
 7.3 ug/m3 
Current 24-hour average PM2.5 concentration
 10.7 ug/m3  
Good Moderate Unhealthy for Sensitive Groups Unhealthy Very
Unhealthy
0 15 40 65 150 ug/m3
 
Current Weather at NPS Park Police HQ
as of 10/22/2009 09:00 PM EDT  •  
Weather
      
 Current temperature
 unavailable
 Current relative humidity
 unavailable
Additional Information
 
The McMillan Reservoir monitoring site is operated by the Monitoring and Assessment Branch, Air Quality Division of the District of Columbia Department of the Environment.
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