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Washington, D.C.
View from the Netherlands Carillon Looking East  •
updated 09/16/2008 11:15 AM EDT  •
Visual range is approximately 85 miles
View from the Netherlands Carillon Looking East, Washington, D.C.
Current Ozone at McMillan Reservoir
as of 09/16/2008  •  10:00 AM EDT
 Ozone
        
Current 1-hour average concentration
 unavailable 
Current 8-hour average concentration
 unavailable 
Good Moderate Unhealthy for Sensitive Groups Unhealthy Very
Unhealthy
0 60 76 96 116 ppb
 
Current Particulate Matter at McMillan Reservoir
as of 09/16/2008  •  9:00 AM EDT
 Particulate Matter
       Details   
Current 1-hour average PM2.5 concentration
 unavailable 
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 09/16/2008  •  11:10 AM EDT
Weather
      
 Current temperature
 70 F 
 Current relative humidity
 51 % 
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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