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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 September 18, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 43 39
1 AM 41 37
2 AM 39 36
3 AM 40 35
4 AM 40 35
5 AM 38 34
6 AM 40 34
7 AM 35 34
8 AM 30 35
9 AM 31 36
10 AM 31 37
11 AM 39 37
12 PM 34 36
1 PM 36 36
2 PM 40 35
3 PM 40 35
4 PM 40 34
5 PM 39 33
6 PM 34 33
7 PM 31 33
8 PM 28 33
9 PM 35 34
10 PM 33 34
11 PM 34 35
Weather and Ozone Data Thursday September 18, 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 43 0.9 NW 10.1 61 1 0.0
1 AM 41 0.9 W 10.0 64 1 0.0
2 AM 39 0.8 W 9.7 66 1 0.0
3 AM 40 1.2 W 10.7 63 1 0.0
4 AM 40 1.0 SW 10.6 64 1 0.0
5 AM 38 0.9 NW 9.4 70 1 0.0
6 AM 40 0.7 W 10.1 66 1 0.0
7 AM 35 0.9 W 9.9 70 1 0.0
8 AM 30 1.0 NW 9.2 82 5 0.0
9 AM 31 1.1 N 9.5 84 19 0.0
10 AM 31 0.9 NE 10.8 85 209 0.0
11 AM 39 1.5 S 12.5 76 221 0.0
12 PM 34 1.4 S 10.7 91 53 0.7
1 PM 36 1.7 SE 12.2 85 423 0.4
2 PM 40 2.3 S 13.4 75 341 0.6
3 PM 40 1.9 S 13.6 77 540 0.1
4 PM 40 2.1 SE 15.6 65 462 0.0
5 PM 39 1.4 S 14.4 73 140 0.0
6 PM 34 1.3 S 12.8 86 44 0.7
7 PM 31 1.1 N 11.4 93 7 2.8
8 PM 28 0.9 N 10.5 96 1 2.5
9 PM 35 1.8 S 9.7 96 1 4.7
10 PM 33 1.1 SW 9.7 96 1 --
11 PM 34 1.2 SW 9.4 96 1 0.0
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updated on 09/19/2014 4:40 AM  I   http://www2.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster