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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 Friday April 28, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 49 46
1 AM 48 46
2 AM 47 45
3 AM 46 44
4 AM 47 44
5 AM 46 43
6 AM 45 43
7 AM 45 42
8 AM 44 42
9 AM 43 41
10 AM 42 41
11 AM 42 42
12 PM 42 42
1 PM 41 42
2 PM 41 43
3 PM 41 43
4 PM 42 44
5 PM 43 44
6 PM 44 44
7 PM 44 44
8 PM 45 44
9 PM 45 44
10 PM 45 44
11 PM 45 44
Weather and Ozone Data Friday April 28, 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 49 1.1 NW -4.0 85 -- 0.0
1 AM 48 1.4 NW -4.0 86 -- 0.1
2 AM 47 1.7 NW -4.2 86 -- 0.0
3 AM 46 1.9 NW -4.5 84 -- 0.0
4 AM 47 2.3 NW -4.8 85 -- 0.0
5 AM 46 2.0 NW -5.0 85 -- 0.0
6 AM 45 1.8 NW -5.4 83 -- 0.0
7 AM 45 1.8 N -5.5 83 2 0.0
8 AM 44 1.5 N -5.1 81 16 0.0
9 AM 43 1.8 N -4.0 78 46 0.0
10 AM 42 1.7 N -2.2 73 102 0.0
11 AM 42 2.3 N -0.9 66 168 0.0
12 PM 42 2.4 N 0.4 62 245 0.0
1 PM 41 2.4 N 1.3 58 603 0.0
2 PM 41 2.3 N 2.0 55 580 0.0
3 PM 41 2.0 NE 1.6 57 448 0.0
4 PM 42 1.6 E 0.0 71 298 0.0
5 PM 43 1.4 NE 0.8 64 263 0.0
6 PM 44 1.1 NE 0.1 67 150 0.0
7 PM 44 1.1 NE 0.1 66 154 0.0
8 PM 45 0.9 NE -1.2 68 44 0.0
9 PM 45 0.8 NE -2.0 69 3 0.0
10 PM 45 0.6 NE -2.8 73 -- 0.0
11 PM 45 0.5 N -3.6 77 -- 0.0
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updated on 04/29/2017 8:43 AM  I   http://nature.nps.gov/air/data/current/data_YELL-WT2.cfm   I  Email: Webmaster