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


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Thursday July 28, 2016 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 33 32
1 AM 35 31
2 AM 35 29
3 AM 32 29
4 AM 30 30
5 AM 32 32
6 AM 27 33
7 AM 33 35
8 AM 26 36
9 AM 23 38
10 AM 35 40
11 AM 38 40
12 PM 45 40
1 PM 41 39
2 PM 41 38
3 PM 41 37
4 PM 41 36
5 PM 40 35
6 PM 38 34
7 PM 37 34
8 PM 34 34
9 PM 34 35
10 PM 31 35
11 PM 34 35
Weather and Ozone Data Thursday July 28, 2016
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 33 1.2 N 11.0 72 0 0.0
1 AM 35 1.4 N 11.9 71 0 0.1
2 AM 35 1.9 N 11.5 73 0 0.2
3 AM 32 1.2 N 9.1 92 0 0.3
4 AM 30 1.0 NW 8.0 90 0 0.0
5 AM 32 1.2 N 7.9 88 0 0.0
6 AM 27 1.1 N 7.5 89 0 0.0
7 AM 33 0.9 NW 7.5 83 12 0.0
8 AM 26 0.5 S 9.3 80 44 0.0
9 AM 23 1.2 S 12.5 72 281 0.0
10 AM 35 1.5 SE 14.6 58 542 0.0
11 AM 38 1.7 S 16.9 51 707 0.0
12 PM 45 1.8 S 18.7 38 828 0.0
1 PM 41 2.5 S 20.7 31 895 0.0
2 PM 41 2.3 S 21.6 28 879 0.0
3 PM 41 2.1 SE 23.2 24 921 0.0
4 PM 41 2.3 W 23.3 20 706 0.0
5 PM 40 1.8 NW 23.0 21 479 0.0
6 PM 38 1.4 N 22.2 25 274 0.0
7 PM 37 1.0 N 20.5 29 139 0.0
8 PM 34 1.1 NW 17.8 38 64 0.0
9 PM 34 1.2 NW 15.7 43 9 0.0
10 PM 31 1.1 N 13.7 47 0 0.0
11 PM 34 1.0 N 12.9 50 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 07/29/2016 4:41 PM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster