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 Monday January 23, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 49 47
1 AM 50 47
2 AM 49 46
3 AM 49 45
4 AM 49 45
5 AM 48 44
6 AM 45 43
7 AM 44 43
8 AM 45 43
9 AM 45 43
10 AM 41 43
11 AM 43 --
12 PM -- --
1 PM -- --
2 PM 41 --
3 PM 44 --
4 PM 44 --
5 PM 46 --
Weather and Ozone Data Monday January 23, 2017
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 49 0.7 SW -8.6 88 0 0.1
1 AM 50 0.8 SW -8.8 87 -- 0.0
2 AM 49 0.5 SW -8.8 87 -- 0.0
3 AM 49 0.5 W -9.9 87 0 0.0
4 AM 49 0.7 W -10.4 86 -- 0.0
5 AM 48 0.7 SW -9.7 86 -- 0.0
6 AM 45 0.4 NE -10.2 86 -- 0.0
7 AM 44 0.4 NW -10.9 87 -- 0.0
8 AM 45 0.5 NW -12.4 86 0 0.0
9 AM 45 0.5 NW -11.5 85 8 0.0
10 AM 41 0.6 SE -10.1 82 33 0.0
11 AM 43 0.7 SE -9.8 78 50 0.0
12 PM -- -- -- -- -- -- --
1 PM -- 1.1 E -3.5 66 62 0.0
2 PM 41 0.7 E -4.9 68 48 0.0
3 PM 44 1.0 E -3.1 63 53 0.0
4 PM 44 0.7 SE -4.1 65 24 0.0
5 PM 46 0.7 NE -5.1 71 5 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 01/23/2017 5:40 PM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster