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 01/28/2015 08:00 AM PST
 View from Turtleback Dome, Looking Southwest
Ozone (O3) at Turtleback Dome Monitoring Site
updated 01/28/2015 08:00 AM PST

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 25 ppb 27 ppb   34 ppb  
1-hour average 27 ppb 27 ppb   38 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center
updated 01/28/2015 08:00 AM PST

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average unavailable 5.4 μg/m3
1-hour average -1.0 μg/m3 21.0 μg/m3  14.0 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
updated 01/28/2015 07:00 AM PST

Current temperature  39 F 
Yesterday's minimum temperature  38 F 
Yesterday's maximum temperature  48 F 
Current relative humidity  64 % 
Yesterday's minimum relative humidity  34 % 
Yesterday's maximum relative humidity  94 % 
Current wind speed  13 mph  
Current wind direction  ENE 
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.17 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 01/28/2015 08:00 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 -1.0 micrograms per cubic meter
Particulate Matter - PM2.5
updated 01/28/2015 08:00 AM PST
  • See more air data »
  • Current Weather »
    updated 01/28/2015 07:00 AM PST
    Temperature
    39 F

    Humidity
    64 %

    Wind
    ENE-13 mph

    Precipitation - 1 hr
    0 in.

  • See more weather data »
  • Feature »
    feature podcast

    Last Updated: January 28, 2015