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 March 31, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 55 53
1 AM 55 53
2 AM 53 53
3 AM 52 53
4 AM 53 53
5 AM 53 53
6 AM 54 53
7 AM 53 53
8 AM 54 53
9 AM 53 52
10 AM 52 --
11 AM 53 --
12 PM -- --
1 PM 53 --
2 PM 53 --
3 PM 53 --
Weather and Ozone Data Tuesday March 31, 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 55 1.2 NW 0.3 52 0 0.0
1 AM 55 0.9 W -0.4 51 0 0.0
2 AM 53 1.1 SW -0.3 51 0 0.0
3 AM 52 1.0 W -1.1 57 0 0.0
4 AM 53 0.9 W -1.6 55 0 0.0
5 AM 53 0.9 W -1.5 59 0 0.0
6 AM 54 1.1 W -1.4 50 0 0.0
7 AM 53 1.0 W -1.8 56 1 0.0
8 AM 54 1.3 W -1.7 55 30 0.0
9 AM 53 1.5 S 3.4 42 207 0.0
10 AM 52 1.5 S 5.9 38 313 0.0
11 AM 53 2.3 S 8.7 32 459 --
12 PM -- -- -- -- -- -- 0.0
1 PM 53 2.4 S 13.5 26 783 --
2 PM 53 4.0 S 13.9 23 776 0.0
3 PM 53 3.7 S 14.6 23 793 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 03/31/2015 3:41 PM  I   http://www2.nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster