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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 Tuesday August 4, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 24
1 AM 34 22
2 AM 30 20
3 AM 21 20
4 AM 19 20
5 AM 16 21
6 AM 22 24
7 AM 15 26
8 AM 20 30
9 AM 21 33
10 AM 27 37
11 AM -- 39
12 PM 30 39
1 PM 35 --
2 PM 37 --
3 PM 40 --
4 PM 45 --
5 PM 47 --
Weather and Ozone Data Tuesday August 4, 2015
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 2.8 NW 10.6 93 0 4.0
1 AM 34 1.1 S 9.7 93 0 0.0
2 AM 30 1.2 W 9.7 95 0 0.0
3 AM 21 0.9 N 9.3 97 0 0.0
4 AM 19 0.8 NW 9.2 97 0 0.0
5 AM 16 0.8 N 9.3 97 0 0.0
6 AM 22 0.8 W 9.7 96 0 0.0
7 AM 15 0.7 N 9.6 97 6 0.0
8 AM 20 0.6 S 9.9 96 20 0.0
9 AM 21 0.7 S 10.3 94 78 0.0
10 AM 27 1.0 S 11.4 89 172 0.0
11 AM -- -- -- -- -- -- --
12 PM 30 1.8 S 13.4 82 369 0.0
1 PM 35 1.9 SE 14.9 73 527 0.0
2 PM 37 1.5 SE 15.7 69 469 0.0
3 PM 40 2.0 SW 16.5 63 547 0.6
4 PM 45 3.4 SW 19.5 39 812 0.0
5 PM 47 3.2 SW 19.8 37 576 0.0
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updated on 08/04/2015 5:51 PM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster