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 July 23, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 41 --
1 AM 39 --
2 AM 34 --
Weather and Ozone Data Wednesday July 23, 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 41 1.2 NW 14.0 58 1 0.0
1 AM 39 1.2 NW 13.0 61 1 0.0
2 AM 34 1.3 N 12.3 65 1 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 07/23/2014 2:40 AM  I   http://nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster