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 Wednesday January 21, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 37
1 AM 38 37
2 AM 38 37
3 AM 37 37
4 AM 39 --
5 AM 38 --
6 AM 37 --
7 AM 36 --
8 AM 37 --
Weather and Ozone Data Wednesday January 21, 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 38 0.7 N -11.8 86 0 0.0
1 AM 38 0.9 NW -11.7 85 0 0.0
2 AM 38 0.6 N -11.9 87 0 0.0
3 AM 37 0.7 N -12.4 87 0 0.0
4 AM 39 0.9 NW -13.4 88 0 0.0
5 AM 38 0.8 N -13.3 87 0 0.0
6 AM 37 0.7 N -13.1 87 0 0.0
7 AM 36 0.7 N -13.7 88 0 0.0
8 AM 37 0.8 N -14.1 86 0 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 01/21/2015 11:46 PM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster