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 08/22/2014 03:45 AM EDT
View from Purchase Knob Looking Northeast
Ozone - O3  updated 08/22/2014 03:00 AM EDT

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 30 ppb 30 ppb   50 ppb  
1-hour average 34 ppb 35 ppb   54 ppb  

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


AQI Ozone


Weather updated 08/22/2014 04:00 AM EDT

Current temperature   64 F  
Yesterday's minimum temperature  64 F 
Yesterday's maximum temperature  74 F 
Current relative humidity  81 % 
Yesterday's minimum relative humidity  69 % 
Yesterday's maximum relative humidity  100 % 
Current wind speed  1 mph  
Current wind direction S
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.





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Last Updated: August 22, 2014