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 Sunday April 23, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 51 49
1 AM 50 49
2 AM 50 --
3 AM 51 --
4 AM 51 --
5 AM 50 --
6 AM 46 --
Weather and Ozone Data Sunday April 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 51 0.6 N -0.9 76 -- 0.0
1 AM 50 0.6 N -1.1 78 -- 0.0
2 AM 50 0.5 N -0.6 77 -- 0.0
3 AM 51 1.0 NW -1.5 80 -- 0.0
4 AM 51 1.0 NW -1.7 82 -- 0.0
5 AM 50 0.6 NW -1.7 81 -- 0.0
6 AM 46 0.3 SW -2.0 82 -- 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 04/23/2017 6:43 AM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster