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Current Ozone and Weather Data in National Parks


Joshua Tree National Park - Black Rock, CA
Portable Ozone Monitor


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Wednesday July 19, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 75 43
1 AM 45 39
2 AM 38 38
3 AM 40 37
4 AM 39 37
5 AM 37 37
6 AM 38 39
7 AM 38 40
8 AM 39 39
9 AM 35 39
10 AM 36 40
11 AM 38 42
12 PM 39 44
1 PM 50 46
2 PM 48 46
3 PM 34 46
4 PM 36 50
5 PM 40 54
6 PM 52 57
7 PM 59 59
8 PM 51 59
9 PM 49 59
10 PM 52 60
11 PM 65 61
Weather and Ozone Data Wednesday July 19, 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 75 5.2 SW 25.8 49 0 0.0
1 AM 45 4.8 S 25.7 50 0 0.0
2 AM 38 3.8 SW 25.3 51 0 0.0
3 AM 40 3.1 SW 24.9 53 0 0.0
4 AM 39 2.5 SW 25.2 52 0 0.0
5 AM 37 3.1 SW 24.9 52 0 0.0
6 AM 38 3.3 SW 24.2 54 1 0.0
7 AM 38 4.9 SW 23.4 55 57 0.0
8 AM 39 6.2 SW 23.5 54 132 0.0
9 AM 35 6.1 SW 24.5 51 218 0.0
10 AM 36 5.8 SW 25.6 50 270 0.0
11 AM 38 5.9 SW 26.2 48 320 0.0
12 PM 39 5.3 SW 27.1 42 410 0.0
1 PM 50 3.9 S 27.6 42 456 0.0
2 PM 48 4.8 SW 28.7 39 686 0.0
3 PM 34 6.7 SW 29.3 34 740 0.0
4 PM 36 7.4 SW 28.0 39 366 0.0
5 PM 40 7.1 SW 28.4 37 457 0.0
6 PM 52 6.7 S 29.1 36 448 0.0
7 PM 59 6.0 SW 28.9 36 268 0.0
8 PM 51 5.7 SW 27.0 39 38 0.0
9 PM 49 5.6 SW 26.1 41 1 0.0
10 PM 52 4.7 SW 25.4 43 0 0.0
11 PM 65 5.0 SW 25.2 46 0 0.0
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updated on 07/20/2017 7:42 AM  I   http://nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster