National Park Service

Air Resources






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

NPS » Explore Nature » Air Resources

National Mall & Memorial Parks

  • View from the Netherlands Carillon
    Looking East
  • Air Data
    & Weather
  • NPS Air
    Webcams
Visual Range is about 21 miles • updated 05/22/2013 09:15 AM EDT
View from the Netherlands Carillon Looking East
Ozone (O3) at McMillan NCORE Monitoring Site 
updated 05/22/2013 08:00 AM EDT

O3 concentration Current Today's
Maximum		 Yesterday's
Maximum
8-hour average 19 ppb 19 ppb   42 ppb  
1-hour average 10 ppb 28 ppb   52 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 05/22/2013 08:00 AM EDT

PM2.5 concentration
Current Today's
Maximum		 Yesterday's
Maximum
24-hour average 17.8 μg/m3 — 14.2 μg/m3
1-hour average 25.0 μg/m3 25 μg/m3  20 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 05/22/2013 09:00 AM EDT

Current temperature  75 F 
Yesterday's minimum temperature  69 F 
Yesterday's maximum temperature  81 F 
Current relative humidity  83 % 
Yesterday's minimum relative humidity  67 % 
Yesterday's maximum relative humidity  96 % 


Visibility at NPS Park Police Headquarters Monitoring Site
updated 05/22/2013 08:00 AM EDT

Approximate Visual Range
 Current Yesterday's
Maximum		 Yesterday's
Minimum
  21 miles 47 miles 18 miles


map Grand Teton National Park Web CameraGreat Smoky Mountains National Park Web Camera Home Shenandoah National Park Web Camera Hawaii Volcanoes National Park Web Camera Big Bend National Park Web Camera Joshua Tree National Park Web Camera Grand Canyon National Park Web Camera Theodore Roosevelt National Park Web Camera Washington, D.C. Web Camera Acadia National Park Web Camera Mammoth Cave National Park Web Camera Great Smoky Mountains National Park, Purchase Knob Web Camera Great Smoky Mountains National Park, Look Rock Web Camera North Cascades National Park Web Camera Olympic National Park Web Camera Mount Rainier National Park Web Camera Sequoia/Kings Canyon National Park Web Camera Yosemite National Park Web Camera Denali National Park & Preserve Web Camera Point Reyes National Seashore Web Camera
Current Air Quality »
at McMillan NCORE
Ozone - O3
updated 05/22/2013 08:00 AM 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 25.0 micrograms per cubic meter
Particulate Matter - PM2.5
updated 05/22/2013 08:00 AM EDT

at Park Police Headquarters
Visual Range
21 miles

updated 05/22/2013 08:00 AM EDT
  • See more air data »
    • Current Weather »
    at Park Police Headquarters
    updated 05/22/2013 09:00 AM EDT
    Temperature
    75 F

    Humidity
    83 %

    Wind
    SSE-2 mph

  • See more weather data »
    • Feature »
    feature podcast

    Last Updated: May 22, 2013