For more information about National Park Service air resources, please visit http://www.nature.nps.gov/air/.


National Mall & Memorial Parks

  • View from the Netherlands Carillon
    Looking East
  • Air Data
    & Weather
  • NPS Air
    Webcams
Visual Range is about 75 miles • updated 09/02/2014 02:30 AM EDT
View from the Netherlands Carillon Looking East
Ozone (O3) at McMillan NCORE Monitoring Site 

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average unavailable unavailable  32 ppb  
1-hour average unavailable unavailable  38 ppb  

*Ozone (O3) is measured in parts per billion (ppb)



AQI Ozone

*The McMillan NCORE monitoring site is operated by the
District of Columbia Department of the Environment.




Particulate Matter (PM2.5) at McMillan NCORE Monitoring Site 

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average unavailable 4.4 μg/m3
1-hour average 6.0 μg/m3 unavailable  7 μg/m3

*Particulate Matter (PM2.5) is measured in micrograms per cubic meter (μg/m3)



Particulate Matter (PM2.5)

*The McMillan NCORE monitoring site is operated by the
District of Columbia Department of the Environment.




Weather at NPS Park Police Headquarters Monitoring Site  updated 09/02/2014 02:00 AM EDT

Current temperature  79 F 
Yesterday's minimum temperature  75 F 
Yesterday's maximum temperature  90 F 
Current relative humidity  85 % 
Yesterday's minimum relative humidity  55 % 
Yesterday's maximum relative humidity  95 % 


Visibility at NPS Park Police Headquarters Monitoring Site
updated 09/02/2014 01:00 AM EDT

Approximate Visual Range
Current Yesterday's
Maximum
Yesterday's
Minimum
  75 miles 198 miles 49 miles


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Current Air Quality »
at McMillan NCORE
Ozone - O3
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy PM 2.5 is 6.0 micrograms per cubic meter
Particulate Matter - PM2.5


at Park Police Headquarters
Visual Range
75 miles

updated 09/02/2014 01:00 AM EDT
  • See more air data »
  • Current Weather »
    at Park Police Headquarters
    updated 09/02/2014 02:00 AM EDT
    Temperature
    79 F

    Humidity
    85 %

    Wind
    S-1 mph

  • See more weather data »
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    Last Updated: September 02, 2014