National Park Service Arrowhead
Explore Air

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 Tuesday July 22, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 38
1 AM 41 37
2 AM 42 36
3 AM 41 36
4 AM 40 35
5 AM 34 34
6 AM 35 36
7 AM 34 37
8 AM 36 40
9 AM 32 42
10 AM 38 44
11 AM -- --
12 PM -- --
1 PM 43 --
2 PM 44 --
3 PM 48 --
4 PM 47 --
5 PM 47 --
Weather and Ozone Data Tuesday July 22, 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 38 1.2 W 9.2 -- 1 0.0
1 AM 41 1.5 SW 9.5 94 1 0.0
2 AM 42 1.4 W 9.2 96 1 0.0
3 AM 41 1.2 W 9.1 93 1 0.0
4 AM 40 1.1 NW 8.7 92 1 0.0
5 AM 34 1.0 N 7.9 100 1 0.0
6 AM 35 1.0 NW 7.8 100 1 0.0
7 AM 34 1.3 W 8.7 96 12 0.0
8 AM 36 1.3 S 11.4 76 80 0.0
9 AM 32 1.2 SE 13.0 73 273 0.0
10 AM 38 2.2 SE 15.0 64 543 0.0
11 AM -- -- -- -- -- -- --
12 PM -- -- -- -- -- -- --
1 PM 43 2.9 SE 20.3 43 923 0.0
2 PM 44 3.1 SE 22.1 38 988 0.0
3 PM 48 3.7 SE 22.9 29 882 0.0
4 PM 47 3.3 S 23.7 25 850 0.0
5 PM 47 3.3 SW 23.7 24 702 0.0
U.S. Department of the Interior Accessibility Freedom of Information Act USA.gov Search
Privacy Policy Disclaimer NPS Home Contact Us
updated on 07/22/2014 8:54 PM  I   http://www2.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster