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 80 miles •
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  20 ppb  
1-hour average unavailable unavailable  24 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 6.3 μg/m3
1-hour average 6.0 μg/m3 unavailable  15 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 10/23/2014 01:00 AM ST

Current temperature  54 F 
Yesterday's minimum temperature  54 F 
Yesterday's maximum temperature  57 F 
Current relative humidity  69 % 
Yesterday's minimum relative humidity  68 % 
Yesterday's maximum relative humidity  92 % 


Visibility at NPS Park Police Headquarters Monitoring Site
updated 10/23/2014 01:00 AM ST

Approximate Visual Range
Current Yesterday's
Maximum
Yesterday's
Minimum
  80 miles 101 miles 23 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
80 miles

updated 10/23/2014 01:00 AM ST
  • See more air data »
  • Current Weather »
    at Park Police Headquarters
    updated 10/23/2014 01:00 AM ST
    Temperature
    54 F

    Humidity
    69 %

    Wind
    NW-8 mph

  • See more weather data »
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    Last Updated: October 23, 2014