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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 Monday July 21, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 34 40
1 AM 39 41
2 AM 44 41
3 AM 46 41
4 AM 45 41
5 AM 45 41
6 AM 36 41
7 AM 37 43
8 AM 39 44
9 AM 38 45
10 AM 44 46
11 AM 46 46
12 PM 47 45
1 PM 47 45
2 PM 46 43
3 PM 46 42
4 PM 46 41
5 PM 47 40
6 PM 43 39
7 PM 43 39
8 PM 42 39
9 PM 37 39
10 PM 34 38
11 PM 41 39
Weather and Ozone Data Monday July 21, 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 34 0.9 NW 14.3 55 1 0.0
1 AM 39 1.3 S 15.0 49 1 0.0
2 AM 44 2.5 S 15.9 47 1 0.0
3 AM 46 1.7 S 15.3 53 1 0.0
4 AM 45 1.7 S 14.1 64 1 0.1
5 AM 45 2.0 SW 11.0 99 1 1.0
6 AM 36 1.1 S 10.5 -- 1 0.2
7 AM 37 1.1 W 10.3 -- 29 0.0
8 AM 39 1.3 S 11.9 95 119 0.0
9 AM 38 1.6 S 13.2 87 243 0.0
10 AM 44 3.2 S 15.6 65 393 0.0
11 AM 46 3.6 SW 15.4 63 240 0.0
12 PM 47 4.0 SW 16.5 57 427 0.0
1 PM 47 4.3 S 18.1 51 711 0.0
2 PM 46 4.8 S 18.5 48 735 0.0
3 PM 46 4.9 S 20.4 39 912 0.0
4 PM 46 4.9 S 21.2 33 766 0.0
5 PM 47 4.7 S 21.0 30 543 0.0
6 PM 43 2.8 N 16.3 58 129 0.0
7 PM 43 2.3 SW 12.7 78 13 0.6
8 PM 42 1.2 NW 11.7 89 16 0.1
9 PM 37 1.0 NE 11.3 96 12 0.0
10 PM 34 1.0 N 10.9 97 1 0.0
11 PM 41 1.8 SW 10.1 91 1 1.1
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updated on 07/22/2014 8:54 PM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster