National Park Service

Air Resources






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

NPS » Explore Nature » Air Resources

Yosemite National Park

  • View from Turtleback Dome
    Looking Southwest
  • Air Data
    & Weather
  • NPS Air
    Webcams
updated 05/20/2013 11:00 PM PDT
View from Turtleback Dome, Looking Southwest
Ozone (O3) at Turtleback Dome Monitoring Site

O3 concentration Current Today's
Maximum		 Yesterday's
Maximum
8-hour average unavailable unavailable  unavailable 
1-hour average unavailable unavailable  53 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center
updated 05/21/2013 12:00 AM PDT

PM2.5 concentration
Current Today's
Maximum		 Yesterday's
Maximum
24-hour average unavailable — 10 μg/m3
1-hour average 13.0 μg/m3 unavailable  53 μg/m3

*Particulate Matter (PM2.5) is measured in micrograms per cubic meter (μg/m3)



Particulate Matter (PM2.5)


Weather at Turtleback Dome Monitoring Site

Current temperature  unavailable  
Yesterday's minimum temperature  55 F 
Yesterday's maximum temperature  57 F 
Current relative humidity  unavailable  
Yesterday's minimum relative humidity  32 % 
Yesterday's maximum relative humidity  35 % 
Current wind speed   unavailable 
Current wind direction  unavailable 
Precipitation in last hour   NA 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.00 in. 

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Current Air Quality »
Ozone - O3
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy PM 2.5 is 13.0 micrograms per cubic meter
Particulate Matter - PM2.5
updated 05/21/2013 12:00 AM PDT
  • See more air data »
    • Current Weather »

    Temperature
    unavailable

    Humidity
    unavailable

    Wind
    unavailable- unavailable

    Precipitation - 1 hr
    NA

  • See more weather data »
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    Last Updated: May 21, 2013