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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 Sunday July 23, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 48 46
1 AM 48 44
2 AM 50 41
3 AM 49 40
4 AM 43 39
5 AM 44 40
6 AM 44 40
7 AM 43 41
8 AM 31 42
9 AM 30 46
10 AM 36 49
11 AM 47 51
12 PM 49 53
1 PM 47 54
2 PM 48 55
3 PM 53 56
4 PM 58 57
5 PM 55 56
6 PM 56 56
7 PM 60 55
8 PM 59 53
9 PM 57 51
10 PM 57 49
11 PM 57 47
Weather and Ozone Data Sunday July 23, 2017
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 48 0.8 NW 13.1 40 -- 0.0
1 AM 48 0.9 N 12.0 43 -- 0.0
2 AM 50 0.8 NW 11.2 44 -- 0.0
3 AM 49 0.7 NW 10.6 51 0 0.0
4 AM 43 0.6 NW 9.8 68 -- 0.0
5 AM 44 0.9 NW 8.8 69 -- 0.0
6 AM 44 0.6 N 8.1 68 0 0.0
7 AM 43 0.5 NW 8.1 68 13 0.0
8 AM 31 0.6 SE 9.6 74 64 0.0
9 AM 30 1.1 SE 12.6 69 280 0.0
10 AM 36 1.3 SE 16.1 55 554 0.0
11 AM 47 1.3 SE 17.8 39 584 0.0
12 PM 49 1.1 SE 18.9 37 537 0.0
1 PM 47 1.1 SE 19.8 38 455 0.0
2 PM 48 1.7 S 20.8 38 471 0.0
3 PM 53 2.1 S 22.1 28 554 0.0
4 PM 58 2.4 SE 24.7 18 880 0.0
5 PM 55 1.9 SE 23.1 24 533 0.0
6 PM 56 1.8 S 22.4 26 371 0.0
7 PM 60 2.5 SW 22.9 22 338 0.0
8 PM 59 1.6 SW 21.4 25 125 0.0
9 PM 57 0.9 NW 17.5 34 12 0.0
10 PM 57 1.0 W 16.8 34 0 0.0
11 PM 57 0.6 W 15.8 35 0 0.0
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updated on 07/24/2017 7:44 PM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster