For more information about National Park Service air resources, please visit http://www.nature.nps.gov/air/.
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View From McFarland Hill
Looking Northeast - Air Data
& Weather - NPS Air
Webcams
Visual Range is about 102 miles • updated 02/15/2013 01:30 AM EST
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Ozone - O3 updated 02/15/2013 12:00 AM EST
O3 concentration | Current | Today's Maximum |
Yesterday's Maximum |
---|---|---|---|
8-hour average | 42 ppb | 44 ppb | 40 ppb |
1-hour average | 41 ppb | 46 ppb | 42 ppb |
*Ozone (O3) is measured in parts per billion (ppb)
![AQI Ozone](https://webarchive.library.unt.edu/web/20130215063229im_/http://www2.nature.nps.gov/air/webcams/images/aqi_bar_Ozone.gif)
Weather updated 02/15/2013 12:00 AM EST
Current temperature | 31 F |
Yesterday's minimum temperature | 29 F |
Yesterday's maximum temperature | 39 F |
Current relative humidity | 58 % |
Yesterday's minimum relative humidity | 50 % |
Yesterday's maximum relative humidity | 88 % |
Current wind speed | 4 mph |
Current wind direction | W |
Precipitation in last hour | 0.00 in. |
Precipitation since midnight | 0.00 in. |
Yesterday's precipitation | 0.00 in. |
Visibility updated 02/15/2013 02:00 AM EST
Approximate Visual Range |
Current | Yesterday's Maximum |
Yesterday's Minimum |
---|---|---|---|
102 miles | 142 miles | 88 miles |
![map](https://webarchive.library.unt.edu/web/20130215063229im_/http://www2.nature.nps.gov/air/webcams/images/WebCam2011-08.jpg)
Current Air Quality »
Current Weather »
updated 02/15/2013 12:00 AM EST
Temperature
31 F
Humidity
58 %
Wind
W-4 mph
Precipitation - 1 hr
0 in.
About
Air Pollution »
In Depth »
Last Updated: February 14, 2013