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 116 miles • updated 11/24/2014 02:45 AM EST
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 17 ppb   28 ppb  
1-hour average 23 ppb unavailable  33 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 unavailable
1-hour average 6.0 μg/m3 unavailable  unavailable

*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 11/24/2014 02:00 AM EST

Current temperature  60 F 
Yesterday's minimum temperature  41 F 
Yesterday's maximum temperature  59 F 
Current relative humidity  93 % 
Yesterday's minimum relative humidity  34 % 
Yesterday's maximum relative humidity  95 % 


Visibility at NPS Park Police Headquarters Monitoring Site
updated 11/24/2014 02:00 AM EST

Approximate Visual Range
Current Yesterday's
Maximum
Yesterday's
Minimum
  116 miles 66 miles 30 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
116 miles

updated 11/24/2014 02:00 AM EST
  • See more air data »
  • Current Weather »
    at Park Police Headquarters
    updated 11/24/2014 02:00 AM EST
    Temperature
    60 F

    Humidity
    93 %

    Wind
    SE-5 mph

  • See more weather data »
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    Last Updated: November 24, 2014