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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 Saturday May 23, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 41 40
1 AM 40 39
2 AM 40 39
3 AM 40 39
4 AM 40 40
5 AM 39 40
6 AM 40 41
7 AM 41 42
8 AM 39 43
9 AM 39 44
10 AM 39 45
11 AM 43 46
12 PM 45 46
1 PM 47 46
2 PM 46 46
3 PM 47 45
4 PM 48 45
5 PM 47 44
6 PM 49 43
7 PM 46 41
8 PM 44 40
9 PM 41 39
10 PM 42 39
11 PM 43 38
Weather and Ozone Data Saturday May 23, 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 41 0.9 N 5.2 82 1 0.0
1 AM 40 0.9 N 4.4 83 1 0.0
2 AM 40 0.9 N 4.8 82 1 0.0
3 AM 40 0.8 N 4.8 83 1 0.0
4 AM 40 1.0 N 4.7 83 1 0.0
5 AM 39 1.0 N 4.7 84 1 0.0
6 AM 40 1.1 N 4.6 83 1 0.0
7 AM 41 1.2 N 5.0 81 15 0.0
8 AM 39 1.7 N 5.4 80 63 0.0
9 AM 39 1.5 NE 7.0 76 181 0.0
10 AM 39 1.8 N 9.5 69 407 0.0
11 AM 43 1.8 NE 11.5 62 394 0.0
12 PM 45 2.2 E 11.7 60 455 0.0
1 PM 47 2.1 E 13.5 57 581 0.0
2 PM 46 2.0 E 12.6 57 476 0.0
3 PM 47 2.0 E 11.0 68 228 0.0
4 PM 48 1.7 SE 10.0 71 402 0.0
5 PM 47 1.6 S 9.3 71 213 0.0
6 PM 49 1.8 SE 10.0 62 168 0.0
7 PM 46 1.2 N 8.4 70 103 0.0
8 PM 44 1.3 NE 8.1 70 52 0.0
9 PM 41 1.2 N 5.6 88 4 0.2
10 PM 42 1.1 N 5.0 84 1 0.0
11 PM 43 1.3 N 3.6 84 1 0.0
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updated on 05/24/2015 4:43 PM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster