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


Great Smoky Mountains National Park

  • View From Purchase Knob
    Looking Northeast
  • Air Data
    & Weather
  • NPS Air
    Webcams
updated 12/18/2014 04:45 PM EST
View from Purchase Knob Looking Northeast
Ozone - O3  updated 12/18/2014 04:00 PM EST

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 40 ppb 45 ppb   42 ppb  
1-hour average 37 ppb 47 ppb   46 ppb  

*Ozone (O3) is measured in parts per billion (ppb)


AQI Ozone


Weather updated 12/18/2014 05:00 PM EST

Current temperature   41 F  
Yesterday's minimum temperature  29 F 
Yesterday's maximum temperature  44 F 
Current relative humidity  64 % 
Yesterday's minimum relative humidity  22 % 
Yesterday's maximum relative humidity  100 % 
Current wind speed  1 mph  
Current wind direction WSW
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.00 in. 

*Air quality monitoring at Purchace Knob is jointly supported by the Friends of Great Smoky Mountains NP, the National Park Service, the State of North Carolina - Division of Air Quality, and the National Oceanic and Atmospheric Administration.





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

Last Updated: December 18, 2014