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


Yosemite National Park

  • View from Turtleback Dome
    Looking Southwest
  • Air Data
    & Weather
  • NPS Air
    Webcams
updated 07/22/2014 10:30 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  57 ppb  
1-hour average unavailable unavailable  59 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center
updated 07/23/2014 12:00 AM PDT

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average unavailable 7.7 μg/m3
1-hour average 4.0 μg/m3 unavailable  30 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  62 F 
Yesterday's maximum temperature  75 F 
Current relative humidity  unavailable  
Yesterday's minimum relative humidity  38 % 
Yesterday's maximum relative humidity  65 % 
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 4.0 micrograms per cubic meter
Particulate Matter - PM2.5
updated 07/23/2014 12:00 AM PDT
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  • Current Weather »

    Temperature
    unavailable

    Humidity
    unavailable

    Wind
    unavailable- unavailable

    Precipitation - 1 hr
    NA

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    Last Updated: July 23, 2014