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 05/22/2015 06:15 PM PDT
 View from Turtleback Dome, Looking Southwest
Ozone (O3) at Turtleback Dome Monitoring Site
updated 05/22/2015 05:00 PM PDT

O3 concentration Current Today's
Maximum
Yesterday's
Maximum
8-hour average 37 ppb 40 ppb   45 ppb  
1-hour average 40 ppb 42 ppb   53 ppb  

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



AQI Ozone


Particulate Matter (PM2.5) at Yosemite Valley Visitor Center
updated 05/22/2015 06:00 PM PDT

PM2.5 concentration
Current Today's
Maximum
Yesterday's
Maximum
24-hour average 7.7 μg/m3 12.6 μg/m3
1-hour average 1.0 μg/m3 10.0 μg/m3  35.0 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 05/22/2015 05:00 PM PDT

Current temperature  45 F 
Yesterday's minimum temperature  43 F 
Yesterday's maximum temperature  50 F 
Current relative humidity  94 % 
Yesterday's minimum relative humidity  56 % 
Yesterday's maximum relative humidity  94 % 
Current wind speed  7 mph  
Current wind direction  SSW 
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.06 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 05/22/2015 05:00 PM PDT
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 05/22/2015 06:00 PM PDT
  • See more air data »
  • Current Weather »
    updated 05/22/2015 05:00 PM PDT
    Temperature
    45 F

    Humidity
    94 %

    Wind
    SSW-7 mph

    Precipitation - 1 hr
    0 in.

  • See more weather data »
  • Feature »
    feature podcast

    Last Updated: May 22, 2015