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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 April 22, 2018 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 55 50
1 AM 54 49
2 AM -- 48
3 AM 51 48
4 AM 51 48
5 AM 49 48
6 AM 48 49
7 AM 47 49
8 AM 46 49
9 AM 48 50
10 AM 50 50
11 AM 51 51
12 PM 51 51
1 PM 51 51
2 PM 49 50
3 PM 49 51
4 PM 51 52
5 PM 53 53
6 PM 53 53
7 PM 51 53
8 PM 51 53
9 PM 50 52
10 PM 52 51
11 PM 55 49
Weather and Ozone Data Sunday April 22, 2018
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 55 1.1 W 1.4 68 -- 0.0
1 AM 54 0.7 W 1.0 69 -- 0.0
2 AM -- 0.8 NW 0.2 72 -- 0.0
3 AM 51 1.2 W 0.4 73 -- 0.0
4 AM 51 1.2 W -0.6 76 -- 0.0
5 AM 49 0.9 N -1.5 81 -- 0.0
6 AM 48 1.0 NW -2.2 85 -- 0.0
7 AM 47 1.0 NW -2.3 86 2 0.0
8 AM 46 0.7 SE -1.2 78 32 0.0
9 AM 48 1.3 SE 1.5 64 299 0.0
10 AM 50 1.8 SE 3.8 51 507 0.0
11 AM 51 1.7 SE 4.9 43 671 0.0
12 PM 51 1.8 SE 6.0 38 799 0.0
1 PM 51 3.1 S 8.5 32 889 0.0
2 PM 49 3.1 S 9.3 34 760 0.0
3 PM 49 3.2 SW 10.3 34 652 0.0
4 PM 51 3.3 SW 10.7 32 652 0.0
5 PM 53 2.8 SW 10.5 33 365 0.0
6 PM 53 2.0 S 9.4 37 169 0.0
7 PM 51 1.4 S 8.1 42 185 0.0
8 PM 51 1.5 SW 6.4 52 33 0.0
9 PM 50 0.9 W 4.1 64 -- 0.0
10 PM 52 1.3 SW 4.0 65 -- 0.0
11 PM 55 1.7 SW 3.5 69 -- 0.0
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updated on 04/23/2018 8:43 AM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster