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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 20, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 51 43
1 AM 46 41
2 AM 45 39
3 AM 44 38
4 AM 42 37
5 AM 39 38
6 AM 40 38
7 AM 38 37
8 AM 35 37
9 AM 35 38
10 AM 36 38
11 AM 38 39
12 PM 44 39
1 PM 39 38
2 PM 34 38
3 PM 36 38
4 PM 42 38
5 PM 41 37
6 PM 40 37
7 PM 37 37
8 PM 38 36
9 PM 36 36
10 PM 36 36
11 PM 39 36
Weather and Ozone Data Thursday July 20, 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 51 0.9 NW 14.0 40 -- 0.0
1 AM 46 0.9 NW 13.4 46 -- 0.0
2 AM 45 0.9 NW 12.7 45 -- 0.0
3 AM 44 0.9 NW 11.9 48 -- 0.0
4 AM 42 0.8 NW 11.3 51 -- 0.0
5 AM 39 0.8 NW 10.9 61 -- 0.0
6 AM 40 0.6 NW 10.4 58 0 0.0
7 AM 38 0.8 W 10.8 60 22 0.0
8 AM 35 0.9 S 13.3 62 97 0.0
9 AM 35 0.7 S 14.6 59 173 0.0
10 AM 36 1.2 SE 17.0 51 480 0.0
11 AM 38 1.5 SW 18.9 48 313 0.0
12 PM 44 1.7 W 15.5 62 157 0.7
1 PM 39 1.2 NW 16.2 69 226 0.0
2 PM 34 0.5 NW 16.7 74 142 0.1
3 PM 36 1.1 SE 15.3 81 83 0.1
4 PM 42 1.6 S 15.7 70 209 0.0
5 PM 41 1.7 S 16.1 69 455 0.0
6 PM 40 1.7 S 18.1 64 578 0.0
7 PM 37 1.4 SE 18.3 66 390 0.0
8 PM 38 1.2 S 17.0 71 118 0.0
9 PM 36 0.8 NW 14.6 80 15 0.0
10 PM 36 1.0 NW 12.9 85 0 0.0
11 PM 39 0.8 NW 12.4 83 -- 0.0
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updated on 07/21/2017 8:41 AM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster