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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


Yesterday's Data   Data Timelines   Ozone Health Advisory  


Ozone Sunday April 20, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 65 64
1 AM 67 63
2 AM 66 61
3 AM 67 58
4 AM 65 56
5 AM 65 56
6 AM 62 55
7 AM 60 55
8 AM 55 55
9 AM 49 56
10 AM 48 57
11 AM 51 59
12 PM 58 60
1 PM 60 60
2 PM 61 60
3 PM 59 60
4 PM 63 60
5 PM 62 --
6 PM 61 --
7 PM 59 --
8 PM 58 --
9 PM 60 --
Weather and Ozone Data Sunday April 20, 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 65 0.7 N 1.1 51 1 0.0
1 AM 67 1.0 SW 2.3 47 1 0.0
2 AM 66 1.0 NW 1.4 51 1 0.0
3 AM 67 0.9 NW 2.0 49 1 0.0
4 AM 65 0.9 NW 0.7 56 1 0.0
5 AM 65 1.1 W 1.4 54 1 0.0
6 AM 62 0.9 N 0.5 60 1 0.0
7 AM 60 0.8 NW 0.6 64 5 0.0
8 AM 55 1.0 SE 0.7 66 74 0.0
9 AM 49 2.2 S 3.1 60 295 0.0
10 AM 48 3.0 S 4.7 56 513 0.0
11 AM 51 2.9 S 5.8 49 654 0.0
12 PM 58 3.0 SW 6.9 38 778 0.0
1 PM 60 3.4 SW 7.2 34 773 0.0
2 PM 61 3.7 SW 8.2 32 902 0.0
3 PM 59 3.1 S 7.3 36 661 0.0
4 PM 63 3.3 SW 8.3 26 736 0.0
5 PM 62 3.2 SW 8.5 26 620 0.0
6 PM 61 3.1 SW 8.4 27 436 0.0
7 PM 59 2.4 SW 7.5 34 188 0.0
8 PM 58 1.2 SW 6.3 40 39 0.0
9 PM 60 1.0 W 4.9 44 3 0.0
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updated on 04/20/2014 10:43 PM  I   http://www2.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster