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
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Visual Range is unavailable • updated 07/28/2015 08:15 PM EDT
View from the Netherlands Carillon Looking East
Ozone (O3) at McMillan NCORE Monitoring Site 
updated 07/28/2015 07:00 PM EDT

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 57 ppb 57 ppb   50 ppb  
1-hour average 52 ppb 69 ppb   58 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 
updated 07/28/2015 07:00 PM EDT

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average 13.8 μg/m3 11.3 μg/m3
1-hour average 16.0 μg/m3 31.0 μg/m3  21.0 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 

Current temperature  unavailable  
Yesterday's minimum temperature  73 F 
Yesterday's maximum temperature  97 F 
Current relative humidity  unavailable  
Yesterday's minimum relative humidity  45 % 
Yesterday's maximum relative humidity  91 % 


Visibility at NPS Park Police Headquarters Monitoring Site

Approximate Visual Range
Current Yesterday's
Maximum
Yesterday's
Minimum
  unavailable 77 miles 27 miles


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Current Air Quality »
at McMillan NCORE
Ozone - O3
updated 07/28/2015 07:00 PM EDT
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy PM 2.5 is 16.0 micrograms per cubic meter
Particulate Matter - PM2.5
updated 07/28/2015 07:00 PM EDT

at Park Police Headquarters
Visual Range
unavailable

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  • Current Weather »
    at Park Police Headquarters

    Temperature
    unavailable

    Humidity
    unavailable

    Wind
    unavailable- unavailable

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    Last Updated: July 28, 2015