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 10/24/2014 07:15 AM EDT
View from Purchase Knob Looking Northeast
Ozone - O3  updated 10/24/2014 07:00 AM EDT

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 51 ppb 51 ppb   46 ppb  
1-hour average 56 ppb 58 ppb   48 ppb  

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


AQI Ozone


Weather updated 10/24/2014 07:00 AM EDT

Current temperature   54 F  
Yesterday's minimum temperature  33 F 
Yesterday's maximum temperature  51 F 
Current relative humidity  10 % 
Yesterday's minimum relative humidity  29 % 
Yesterday's maximum relative humidity  94 % 
Current wind speed  2 mph  
Current wind direction NNW
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: October 24, 2014