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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 Monday September 29, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 25 22
1 AM 24 22
2 AM 24 23
3 AM 23 24
4 AM 20 25
5 AM 20 28
6 AM 15 30
7 AM 26 33
8 AM 28 34
9 AM 32 36
10 AM 31 37
11 AM 32 38
12 PM 40 40
1 PM 36 40
2 PM 40 40
3 PM 36 40
4 PM 41 41
5 PM 41 41
6 PM 43 41
7 PM 43 41
8 PM 40 40
9 PM 38 40
10 PM 41 40
11 PM 44 39
Weather and Ozone Data Monday September 29, 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 25 1.1 NW 3.7 93 1 0.0
1 AM 24 1.0 N 3.4 93 1 0.0
2 AM 24 1.0 NW 3.0 93 1 0.0
3 AM 23 1.0 W 2.7 94 1 0.0
4 AM 20 1.0 N 3.1 93 1 0.0
5 AM 20 1.0 NW 3.8 92 1 0.0
6 AM 15 0.8 N 3.5 93 1 0.0
7 AM 26 0.9 N 3.4 91 1 0.0
8 AM 28 0.8 NW 3.4 90 11 0.0
9 AM 32 0.6 N 4.6 84 78 0.0
10 AM 31 1.0 SE 5.8 77 137 0.0
11 AM 32 1.3 SW 6.0 81 118 0.8
12 PM 40 0.9 SW 6.2 83 316 0.3
1 PM 36 1.3 S 7.4 79 297 0.0
2 PM 40 2.3 SW 8.5 66 398 0.0
3 PM 36 3.0 SW 7.6 71 388 0.1
4 PM 41 3.3 SW 7.0 71 294 0.0
5 PM 41 2.4 SW 6.8 70 224 0.0
6 PM 43 2.4 SW 6.1 72 105 0.0
7 PM 43 2.1 SW 5.2 75 41 0.0
8 PM 40 1.4 S 4.1 82 1 0.0
9 PM 38 1.1 S 3.7 84 1 0.0
10 PM 41 1.5 SW 3.9 83 1 0.0
11 PM 44 1.7 S 3.6 85 1 0.0
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updated on 09/30/2014 11:41 PM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster