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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 Tuesday May 26, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 31 27
1 AM 29 27
2 AM 27 28
3 AM 27 29
4 AM 33 30
5 AM 27 31
6 AM 23 33
7 AM 26 36
8 AM 29 38
9 AM 36 40
10 AM 34 41
11 AM 37 42
12 PM 40 42
1 PM 42 43
2 PM 45 42
3 PM 43 41
4 PM 44 40
5 PM 43 38
6 PM 42 38
7 PM 44 36
8 PM 43 33
9 PM 36 30
10 PM 33 28
11 PM 38 26
Weather and Ozone Data Tuesday May 26, 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 31 0.9 NW 4.5 92 1 0.0
1 AM 29 0.7 N 4.8 92 1 0.0
2 AM 27 0.9 NW 3.7 94 1 0.0
3 AM 27 1.0 NW 2.5 95 1 0.0
4 AM 33 0.8 W 2.9 94 1 0.0
5 AM 27 0.6 W 3.9 94 1 0.0
6 AM 23 0.7 SW 3.7 96 1 1.1
7 AM 26 0.7 SW 3.9 96 17 0.1
8 AM 29 1.1 S 4.7 96 55 0.0
9 AM 36 1.3 S 5.3 94 124 0.0
10 AM 34 1.3 S 6.1 92 114 --
11 AM 37 9.7 N 8.0 87 311 --
12 PM 40 2.0 SE 9.5 82 398 0.0
1 PM 42 2.5 W 7.3 84 445 2.2
2 PM 45 2.5 SW 10.6 70 786 0.0
3 PM 43 2.5 S 11.5 69 480 0.0
4 PM 44 2.5 S 10.1 69 243 0.0
5 PM 43 2.6 SW 7.8 74 185 0.0
6 PM 42 1.1 S 7.2 79 128 0.0
7 PM 44 1.2 SE 7.3 83 132 0.0
8 PM 43 0.9 SE 6.8 84 70 0.0
9 PM 36 0.6 W 5.2 88 11 0.0
10 PM 33 0.8 NW 4.2 91 1 0.0
11 PM 38 1.0 NW 3.3 91 1 0.0
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updated on 05/27/2015 10:47 AM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster