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 33 miles • updated 07/30/2015 06:00 PM DT
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 42 ppb 47 ppb   38 ppb  
1-hour average 34 ppb 65 ppb   45 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 10.6 μg/m3 10.5 μg/m3
1-hour average 13.0 μg/m3 19.0 μg/m3  17.0 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  79 F 
Yesterday's minimum temperature  76 F 
Yesterday's maximum temperature  93 F 
Current relative humidity  86 % 
Yesterday's minimum relative humidity  56 % 
Yesterday's maximum relative humidity  96 % 


Visibility at NPS Park Police Headquarters Monitoring Site
updated 07/30/2015 09:00 PM DT

Approximate Visual Range
Current Yesterday's
Maximum
Yesterday's
Minimum
  33 miles 71 miles 20 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 13.0 micrograms per cubic meter
Particulate Matter - PM2.5


at Park Police Headquarters
Visual Range
33 miles

updated 07/30/2015 09:00 PM DT
  • See more air data »
  • Current Weather »
    at Park Police Headquarters

    Temperature
    79 F

    Humidity
    86 %

    Wind
    SSE-1 mph

  • See more weather data »
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    Last Updated: July 30, 2015