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 04/18/2014 11:30 AM EDT
View from Purchase Knob Looking Northeast
Ozone - O3  updated 04/18/2014 11:00 AM EDT

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 54 ppb 55 ppb   55 ppb  
1-hour average 55 ppb 56 ppb   56 ppb  

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


AQI Ozone


Weather updated 04/18/2014 12:00 PM EDT

Current temperature   44 F  
Yesterday's minimum temperature  26 F 
Yesterday's maximum temperature  50 F 
Current relative humidity  68 % 
Yesterday's minimum relative humidity  37 % 
Yesterday's maximum relative humidity  84 % 
Current wind speed  5 mph  
Current wind direction NNE
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: April 18, 2014