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 11/28/2014 09:45 PM PST
 View from Turtleback Dome, Looking Southwest
Ozone (O3) at Turtleback Dome Monitoring Site
updated 11/28/2014 09:00 PM PST

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average unavailable unavailable  41 ppb  
1-hour average 40 ppb unavailable  42 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center
updated 11/28/2014 11:00 PM PST

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average unavailable unavailable
1-hour average unavailable unavailable  unavailable

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



Particulate Matter (PM2.5)


Weather at Turtleback Dome Monitoring Site
updated 11/28/2014 08:00 PM PST

Current temperature  54 F 
Yesterday's minimum temperature  47 F 
Yesterday's maximum temperature  61 F 
Current relative humidity  20 % 
Yesterday's minimum relative humidity  17 % 
Yesterday's maximum relative humidity  28 % 
Current wind speed  4 mph  
Current wind direction  ENE 
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.00 in. 

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Current Air Quality »
Ozone - O3
updated 11/28/2014 09:00 PM PST
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy PM 2.5 is   micrograms per cubic meter
Particulate Matter - PM2.5
updated 11/28/2014 11:00 PM PST
  • See more air data »
  • Current Weather »
    updated 11/28/2014 08:00 PM PST
    Temperature
    54 F

    Humidity
    20 %

    Wind
    ENE-4 mph

    Precipitation - 1 hr
    0 in.

  • See more weather data »
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    Last Updated: November 29, 2014