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
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Visual Range is about 99 miles • updated 06/19/2013 02:15 AM EDT
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Ozone - O3 updated 06/19/2013 02:00 AM EDT
| O3 concentration | Current | Today's Maximum |
Yesterday's Maximum |
|---|---|---|---|
| 8-hour average | 27 ppb | 27 ppb | 29 ppb |
| 1-hour average | 28 ppb | 28 ppb | 40 ppb |
*Ozone (O3) is measured in parts per billion (ppb)
Weather updated 06/19/2013 02:00 AM EDT
| Current temperature | 60 F |
| Yesterday's minimum temperature | 56 F |
| Yesterday's maximum temperature | 65 F |
| Current relative humidity | 72 % |
| Yesterday's minimum relative humidity | 55 % |
| Yesterday's maximum relative humidity | 97 % |
| Current wind speed | 2 mph |
| Current wind direction | WSW |
| Precipitation in last hour | 0.00 in. |
| Precipitation since midnight | 0.00 in. |
| Yesterday's precipitation | 0.00 in. |
Visibility updated 06/19/2013 01:00 AM EDT
| Approximate Visual Range |
Current | Yesterday's Maximum |
Yesterday's Minimum |
|---|---|---|---|
| 99 miles | 111 miles | 6 miles |
Current Air Quality »
Current Weather »
updated 06/19/2013 02:00 AM EDT
Temperature
60 F
Humidity
72 %
Wind
WSW-2 mph
Precipitation - 1 hr
0 in.
About
Air Pollution »
In Depth »
Last Updated: June 19, 2013







