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Great Smoky Mountains National Park

  • View From Purchase Knob
    Looking Northeast
  • Air Data
    & Weather
  • NPS Air
updated 08/31/2015 09:30 PM EDT
View from Purchase Knob Looking Northeast
Ozone - O3  updated 08/31/2015 09:00 PM EDT

O3 concentration Current Today's
8-hour average 43 ppb 47 ppb   56 ppb  
1-hour average 46 ppb 46 ppb   58 ppb  

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

AQI Ozone

Weather updated 08/31/2015 10:00 PM EDT

Current temperature   62 F  
Yesterday's minimum temperature  54 F 
Yesterday's maximum temperature  62 F 
Current relative humidity  91 % 
Yesterday's minimum relative humidity  67 % 
Yesterday's maximum relative humidity  100 % 
Current wind speed  3 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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Current Air Quality »
Ozone - O3
updated 08/31/2015 09:00 PM EDT
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy
Current Weather »
updated 08/31/2015 10:00 PM EDT
62 F

91 %

NNW-3 mph

Precipitation - 1 hr
0 in.

  • See more weather data »