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 12/22/2014 06:15 AM PST
 View from Turtleback Dome, Looking Southwest
Ozone (O3) at Turtleback Dome Monitoring Site
updated 12/22/2014 05:00 AM PST

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 27 ppb 27 ppb   24 ppb  
1-hour average 32 ppb 32 ppb   26 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average unavailable unavailable
1-hour average 17.0 μg/m3 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 12/22/2014 05:00 AM PST

Current temperature  45 F 
Yesterday's minimum temperature  43 F 
Yesterday's maximum temperature  49 F 
Current relative humidity  39 % 
Yesterday's minimum relative humidity  58 % 
Yesterday's maximum relative humidity  94 % 
Current wind speed  8 mph  
Current wind direction  ENE 
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.00 in. 

map Grand Teton National Park Web CameraGreat Smoky Mountains National Park Web Camera Home Shenandoah National Park Web Camera Hawaii Volcanoes National Park Web Camera Big Bend National Park Web Camera Joshua Tree National Park Web Camera Grand Canyon National Park Web Camera Theodore Roosevelt National Park Web Camera Washington, D.C. Web Camera Acadia National Park Web Camera Mammoth Cave National Park Web Camera Great Smoky Mountains National Park, Purchase Knob Web Camera Great Smoky Mountains National Park, Look Rock Web Camera North Cascades National Park Web Camera Olympic National Park Web Camera Mount Rainier National Park Web Camera Sequoia/Kings Canyon National Park Web Camera Yosemite National Park Web Camera Denali National Park & Preserve Web Camera Point Reyes National Seashore Web Camera
Current Air Quality »
Ozone - O3
updated 12/22/2014 05:00 AM 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 17.0 micrograms per cubic meter
Particulate Matter - PM2.5

  • See more air data »
  • Current Weather »
    updated 12/22/2014 05:00 AM PST
    Temperature
    45 F

    Humidity
    39 %

    Wind
    ENE-8 mph

    Precipitation - 1 hr
    0 in.

  • See more weather data »
  • Feature »
    feature podcast

    Last Updated: December 22, 2014