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 Saturday April 29, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 45 44
1 AM 45 43
2 AM 45 42
3 AM 44 42
4 AM 43 43
5 AM 43 44
6 AM 42 44
7 AM 45 45
8 AM 40 46
9 AM 39 47
10 AM 45 48
11 AM 49 49
12 PM 49 --
1 PM 49 --
2 PM 49 --
3 PM 49 --
4 PM 49 --
Weather and Ozone Data Saturday April 29, 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 45 0.5 N -4.6 79 -- 0.0
1 AM 45 0.6 N -5.7 81 -- 0.0
2 AM 45 0.5 NW -6.4 83 -- 0.0
3 AM 44 0.6 NW -6.4 83 -- 0.0
4 AM 43 0.5 NW -5.9 83 -- 0.0
5 AM 43 0.4 NW -6.6 83 -- 0.0
6 AM 42 0.5 N -7.7 85 -- 0.0
7 AM 45 0.4 NW -8.3 85 11 0.0
8 AM 40 0.4 SE -7.2 81 69 0.0
9 AM 39 1.0 SE -4.8 70 340 0.0
10 AM 45 1.2 S -2.7 60 559 0.0
11 AM 49 1.5 S 0.4 48 813 0.0
12 PM 49 2.2 SE 0.9 42 800 0.0
1 PM 49 1.9 S 2.1 41 943 0.0
2 PM 49 2.2 SE 3.2 38 1058 0.0
3 PM 49 2.6 SE 2.6 40 738 0.0
4 PM 49 1.6 S 2.0 43 357 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 04/29/2017 4:44 PM  I   http://nature.nps.gov/air/data/current/data_YELL-WT.cfm   I  Email: Webmaster