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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 May 4, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 48 38
1 AM 46 35
2 AM 41 33
3 AM 36 33
4 AM -- 35
5 AM 39 37
6 AM 33 39
7 AM 29 42
8 AM 26 45
9 AM 27 49
10 AM 42 52
11 AM 53 54
12 PM 53 54
1 PM 56 54
2 PM 54 54
3 PM 53 54
4 PM 54 54
5 PM 55 55
6 PM 56 54
7 PM 55 53
8 PM 55 53
9 PM 54 52
10 PM 54 51
11 PM 56 49
Weather and Ozone Data Monday May 4, 2015
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 48 1.0 W 1.1 44 0 0.0
1 AM 46 1.1 NW 0.7 44 0 0.0
2 AM 41 1.0 NW 0.3 44 0 0.0
3 AM 36 0.7 N -0.4 44 0 0.0
4 AM -- 0.6 NW -0.8 44 0 0.0
5 AM 39 0.8 NW -0.8 44 0 0.0
6 AM 33 0.8 N -0.9 44 1 0.0
7 AM 29 0.6 N -1.3 44 13 0.0
8 AM 26 0.7 SE -0.2 44 60 0.0
9 AM 27 1.2 SE 2.6 44 346 0.0
10 AM 42 1.9 S 6.7 44 536 0.0
11 AM 53 1.8 S 9.5 44 590 0.0
12 PM 53 1.6 S 10.3 44 509 0.0
1 PM 56 2.1 SE 13.4 44 819 0.0
2 PM 54 1.9 E 13.7 44 497 0.0
3 PM 53 1.7 NE 15.4 45 636 0.0
4 PM 54 1.7 SE 14.5 44 364 --
5 PM 55 1.1 SE 15.1 44 348 0.0
6 PM 56 1.2 E 16.2 44 266 0.0
7 PM 55 0.8 E 13.5 44 80 0.0
8 PM 55 1.2 SW 11.1 44 46 0.0
9 PM 54 1.6 W 8.7 44 5 0.0
10 PM 54 1.1 NW 6.2 44 1 0.0
11 PM 56 1.2 NW 4.8 44 1 0.0
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updated on 05/05/2015 6:48 AM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster