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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 Saturday May 20, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 32
1 AM 35 32
2 AM 32 --
3 AM 30 --
4 AM 32 --
5 AM 30 --
6 AM 33 --
Weather and Ozone Data Saturday May 20, 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 38 0.9 NW -1.2 92 -- 0.0
1 AM 35 0.7 N -1.4 92 -- 0.0
2 AM 32 0.5 N -1.3 92 -- 0.0
3 AM 30 0.5 N -1.2 92 -- 0.0
4 AM 32 0.5 N -1.4 92 -- 0.0
5 AM 30 0.2 NE -1.0 92 -- 0.0
6 AM 33 0.5 SE -1.1 92 0 0.0
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updated on 05/20/2017 6:42 AM  I   http://www.nature.nps.gov/air/data/current/Data_YELL-WT.cfm   I  Email: Webmaster