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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 September 20, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 31
1 AM 38 30
2 AM 31 27
3 AM 32 27
4 AM 29 27
5 AM 28 28
6 AM 28 29
7 AM 28 31
8 AM 27 33
9 AM 19 34
10 AM 25 37
11 AM 34 --
12 PM 38 --
1 PM 40 --
2 PM 42 --
3 PM 43 --
Weather and Ozone Data Saturday September 20, 2014
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 1.4 SW 10.9 59 1 0.0
1 AM 38 1.6 SW 10.2 61 1 0.0
2 AM 31 0.9 SW 7.8 76 1 0.0
3 AM 32 0.9 W 6.9 79 1 0.0
4 AM 29 1.0 W 6.1 82 1 0.0
5 AM 28 1.2 NW 5.3 85 1 0.0
6 AM 28 1.1 NW 4.8 87 1 0.0
7 AM 28 1.2 NW 4.6 89 1 0.0
8 AM 27 0.8 W 5.0 92 24 0.0
9 AM 19 1.1 SE 7.4 82 200 0.0
10 AM 25 1.2 SE 9.6 75 398 0.0
11 AM 34 1.5 SE 11.7 61 554 0.0
12 PM 38 1.8 SE 13.6 51 670 0.0
1 PM 40 1.9 SE 15.1 42 735 0.0
2 PM 42 1.6 SE 16.4 40 747 0.0
3 PM 43 1.9 SE 17.2 38 705 0.0
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updated on 09/20/2014 3:40 PM  I   http://www2.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster