National Park Service Arrowhead
Explore Air

Current Ozone and Weather Data in National Parks


Joshua Tree National Park - Cottonwood Canyon, CA
EPA AQS Site Number:


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Friday March 27, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 40 41
1 AM 40 41
2 AM 41 41
3 AM 42 42
4 AM 42 42
5 AM 43 42
6 AM 42 43
7 AM 41 44
8 AM 42 45
9 AM 42 46
10 AM 44 47
11 AM -- 48
12 PM 46 48
1 PM 47 48
2 PM 48 48
3 PM 49 47
4 PM 49 47
5 PM 49 46
6 PM 48 46
7 PM 48 46
8 PM 47 47
9 PM 46 49
10 PM 44 50
11 PM 47 53
Weather and Ozone Data Friday March 27, 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 40 2.8 N 18.2 17 0 0.0
1 AM 40 2.9 N 17.7 18 0 0.0
2 AM 41 2.2 N 18.5 17 0 0.0
3 AM 42 2.0 N 18.5 17 0 0.0
4 AM 42 1.6 N 18.1 17 0 0.0
5 AM 43 1.8 N 18.3 17 0 0.0
6 AM 42 2.1 N 17.3 18 0 0.0
7 AM 41 2.0 N 16.7 20 4 0.0
8 AM 42 1.6 N 18.2 19 144 0.0
9 AM 42 1.8 N 21.1 18 358 0.0
10 AM 44 2.2 N 23.0 15 560 0.0
11 AM -- 2.1 NE 24.2 14 725 0.0
12 PM 46 2.1 NE 25.2 14 840 0.0
1 PM 47 2.5 S 26.3 13 892 0.0
2 PM 48 2.2 S 27.0 12 882 0.0
3 PM 49 2.3 SE 27.4 12 806 0.0
4 PM 49 2.1 SE 27.8 12 672 0.0
5 PM 49 2.3 S 27.9 12 396 0.0
6 PM 48 2.3 S 27.6 12 89 0.0
7 PM 48 2.4 SW 26.3 13 15 0.0
8 PM 47 2.3 S 24.8 14 0 0.0
9 PM 46 2.1 S 24.0 15 0 0.0
10 PM 44 0.5 SW 22.3 16 0 0.0
11 PM 47 0.9 S 22.4 16 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 03/28/2015 10:40 AM  I   http://www2.nature.nps.gov/air/data/current/data_JOTR-CC2.cfm   I  Email: Webmaster