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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 Wednesday October 18, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 43 41
1 AM 43 40
2 AM 42 39
3 AM -- 38
4 AM -- 38
5 AM 40 38
6 AM 39 39
7 AM 39 39
8 AM 38 40
9 AM 36 41
10 AM 39 42
11 AM 37 43
12 PM 42 44
1 PM 44 45
2 PM 44 44
3 PM 45 44
4 PM 45 43
5 PM 46 43
6 PM 47 42
7 PM 45 41
8 PM 44 40
9 PM 42 40
10 PM 41 --
11 PM 41 --
Weather and Ozone Data Wednesday October 18, 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 43 1.2 W 2.9 44 -- 0.0
1 AM 43 1.2 W 2.8 44 -- 0.0
2 AM 42 1.4 SW 2.6 44 -- 0.0
3 AM -- 2.3 SW 3.6 40 -- 0.0
4 AM -- 3.4 SW 4.2 38 -- 0.0
5 AM 40 3.2 SW 3.8 39 -- 0.0
6 AM 39 2.5 SW 2.7 43 -- 0.0
7 AM 39 1.1 SW 1.1 50 -- 0.0
8 AM 38 0.5 N -1.3 61 0 0.0
9 AM 36 1.1 S 0.4 54 68 0.0
10 AM 39 2.8 SW 5.3 38 273 0.0
11 AM 37 2.9 S 6.9 40 430 --
12 PM 42 3.2 SW 9.0 30 536 0.0
1 PM 44 3.4 S 10.3 27 578 0.0
2 PM 44 4.2 SW 10.5 27 573 0.0
3 PM 45 4.7 SW 9.6 29 318 0.0
4 PM 45 4.9 SW 10.1 33 365 0.0
5 PM 46 4.3 SW 9.7 34 118 0.0
6 PM 47 3.3 SW 8.4 39 67 0.0
7 PM 45 2.8 SW 7.0 43 3 0.0
8 PM 44 1.7 SW 6.0 44 -- 0.0
9 PM 42 1.6 SW 5.2 45 -- 0.0
10 PM 41 1.7 S 4.9 46 -- 0.0
11 PM 41 0.9 S 3.9 49 -- 0.0
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updated on 10/19/2017 3:40 AM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster