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Washington, D.C.
View from the Netherlands Carillon Looking East  •
updated 01/14/2009 7:15 PM EST  •
Visual range measurement is unavailable
View from the Netherlands Carillon Looking East, Washington, D.C.
Photo captured by Olympus camera
Current Ozone at McMillan Reservoir
as of 01/14/2009  •  6:00 PM EST
 Ozone
        
Current 1-hour average concentration
 11 ppb 
Current 8-hour average concentration
 8 ppb 
Good Moderate Unhealthy for Sensitive Groups Unhealthy Very
Unhealthy
0 60 76 96 116 ppb
 
Current Particulate Matter at McMillan Reservoir
as of 01/14/2009  •  6:00 PM EST
 Particulate Matter
       Details   
Current 1-hour average PM2.5 concentration
 2.0 ug/m3 
Current 24-hour average PM2.5 concentration
 3.0 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 01/14/2009  •  1:10 PM EST
Weather
      
 Current temperature
 33 F 
 Current relative humidity
 32 % 
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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