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Current Ozone and Weather Data in National Parks


Yellowstone National Park - Water Tower, WY
EPA AQS Site Number: 56-039-1011


Yesterday's Data   Data Timelines   Ozone Health Advisory  


Ozone Friday July 21, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 36 36
1 AM 37 37
2 AM 37 37
3 AM 36 37
4 AM 33 --
5 AM 36 --
6 AM 34 --
7 AM 44 --
8 AM 43 --
Weather and Ozone Data Friday July 21, 2017
Hour
Ending
(Local Time)
Ozone
(parts per
billion)
Wind
Speed
(meters per
second)
Wind
Direction
Temperature
(degrees C)
Relative
Humidity
(%)
Solar
Radiation
(watts per
meter
squared)
Rainfall
(millimeters)
12 AM 36 0.9 NW 11.6 85 -- 0.0
1 AM 37 0.7 NW 11.1 84 -- 0.0
2 AM 37 0.9 NW 9.9 84 -- 0.0
3 AM 36 0.9 NW 9.4 84 -- 0.0
4 AM 33 1.0 NW 9.1 91 -- 0.0
5 AM 36 1.0 NW 8.4 90 -- 0.0
6 AM 34 1.1 NW 7.8 91 0 0.0
7 AM 44 0.8 NW 6.8 81 14 0.0
8 AM 43 0.4 SE 9.6 65 73 0.0
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updated on 07/21/2017 8:41 AM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster