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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


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Thursday July 31, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 41 37
1 AM 41 35
2 AM 40 34
3 AM 39 33
4 AM 36 32
5 AM 36 32
6 AM 36 33
7 AM 31 35
8 AM 28 36
9 AM 28 37
10 AM 31 38
11 AM 35 39
12 PM 38 40
1 PM 42 40
2 PM 47 39
3 PM 45 39
4 PM 36 39
5 PM 37 40
6 PM 38 40
7 PM 43 40
8 PM 34 39
9 PM 39 39
10 PM 45 40
11 PM 44 39
Weather and Ozone Data Thursday July 31, 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 41 1.0 W 12.0 56 1 0.0
1 AM 41 1.0 SW 11.8 57 1 0.0
2 AM 40 1.5 S 12.5 60 1 0.0
3 AM 39 0.9 W 10.7 71 1 0.0
4 AM 36 1.0 NW 9.4 78 1 0.0
5 AM 36 0.9 W 8.8 81 1 0.0
6 AM 36 1.0 NW 8.2 84 1 0.0
7 AM 31 0.7 N 8.1 87 20 0.0
8 AM 28 0.9 S 9.9 84 48 0.0
9 AM 28 1.3 SE 12.2 74 283 0.0
10 AM 31 1.7 SE 14.0 65 545 0.0
11 AM 35 1.7 SE 15.9 56 704 0.0
12 PM 38 2.2 SE 18.0 51 847 0.0
1 PM 42 1.6 S 17.1 52 292 0.2
2 PM 47 2.4 SW 17.2 46 730 0.0
3 PM 45 3.0 S 18.5 44 505 0.8
4 PM 36 1.4 NW 12.7 88 146 0.4
5 PM 37 0.9 SE 17.1 63 344 0.0
6 PM 38 1.5 N 14.2 72 46 0.1
7 PM 43 1.5 SW 13.3 70 131 0.1
8 PM 34 1.1 N 13.1 77 71 0.0
9 PM 39 1.4 N 12.5 72 8 0.0
10 PM 45 1.8 N 12.5 63 1 0.0
11 PM 44 1.7 NW 12.6 63 1 0.0
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updated on 08/01/2014 6:40 AM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster