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 March 26, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 42 41
1 AM 42 41
2 AM 43 40
3 AM 42 39
4 AM 43 39
5 AM 42 38
6 AM 40 37
7 AM 40 37
8 AM 38 37
9 AM 36 37
10 AM 36 37
11 AM 37 37
12 PM 38 37
1 PM 38 37
2 PM 38 37
3 PM 37 36
4 PM 37 35
5 PM 37 35
6 PM 37 34
7 PM 38 33
8 PM 38 32
9 PM 34 31
10 PM 33 30
11 PM 32 30
Weather and Ozone Data Thursday March 26, 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 42 0.6 W -5.1 87 0 0.0
1 AM 42 0.6 NE -4.1 85 0 0.0
2 AM 43 0.6 N -4.0 86 0 0.0
3 AM 42 0.7 N -3.6 88 0 0.0
4 AM 43 0.8 N -3.9 90 0 0.0
5 AM 42 0.8 N -4.8 92 0 0.0
6 AM 40 0.6 W -3.7 92 0 0.0
7 AM 40 0.6 W -3.0 93 0 0.0
8 AM 38 1.0 SW -3.3 96 2 0.0
9 AM 36 1.1 SE -2.0 95 28 0.0
10 AM 36 1.1 S -0.7 100 58 0.0
11 AM 37 1.1 E 1.2 93 86 0.0
12 PM 38 1.9 SW 3.0 78 125 0.0
1 PM 38 1.6 SW 4.0 72 128 0.0
2 PM 38 2.2 W 6.5 62 373 0.0
3 PM 37 2.6 SW 5.2 68 300 0.0
4 PM 37 2.2 SW 4.6 69 198 0.0
5 PM 37 2.5 SW 4.9 67 226 0.0
6 PM 37 2.4 SW 5.2 67 213 0.0
7 PM 38 1.8 SW 4.5 72 89 0.0
8 PM 38 1.1 SW 3.5 80 12 0.0
9 PM 34 0.7 NW 2.4 93 0 0.0
10 PM 33 0.9 N 1.2 98 0 0.0
11 PM 32 0.9 NW -0.2 100 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 03/27/2015 10:41 PM  I   http://www.nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster