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 March 22, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 48 42
1 AM 47 40
2 AM 44 40
3 AM 38 40
4 AM 38 41
5 AM 41 43
6 AM 42 44
7 AM 39 45
8 AM 38 46
9 AM 41 48
10 AM 45 49
11 AM 49 50
12 PM 50 51
1 PM 50 51
2 PM 51 51
3 PM 51 49
4 PM 51 49
5 PM 52 49
6 PM 52 --
7 PM 51 --
8 PM 53 --
9 PM 47 --
10 PM 42 --
Weather and Ozone Data Wednesday March 22, 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 48 1.7 SW 3.5 64 0 0.0
1 AM 47 2.3 SW 2.7 80 0 0.0
2 AM 44 0.5 S 1.7 91 0 0.1
3 AM 38 0.6 SW 0.5 92 0 3.5
4 AM 38 0.2 S 0.2 92 0 1.4
5 AM 41 0.2 S 0.1 92 0 0.0
6 AM 42 0.2 SW 0.1 92 0 0.0
7 AM 39 1.0 S 0.3 92 0 0.0
8 AM 38 0.4 SE 0.1 92 3 0.0
9 AM 41 0.9 SW 0.4 92 28 0.0
10 AM 45 1.4 SW 1.3 86 206 0.0
11 AM 49 2.5 SW 2.8 79 506 0.0
12 PM 50 2.5 S 3.9 72 633 0.0
1 PM 50 3.2 S 5.2 63 692 0.0
2 PM 51 2.9 S 5.6 57 667 0.0
3 PM 51 2.2 S 5.4 56 380 0.0
4 PM 51 1.8 S 5.0 56 329 0.0
5 PM 52 1.9 SW 5.0 55 216 0.0
6 PM 52 2.0 SW 3.9 62 93 0.0
7 PM 51 1.3 SW 2.3 75 75 0.0
8 PM 53 1.1 SW 1.3 76 8 0.0
9 PM 47 0.4 NW 0.2 82 0 0.0
10 PM 42 0.4 N -0.5 84 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 03/22/2017 10:55 PM  I   http://www.nature.nps.gov/air/data/current/Data_YELL-WT.cfm   I  Email: Webmaster