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 Saturday April 25, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 46 42
1 AM 45 41
2 AM 43 41
3 AM 41 40
4 AM 41 40
5 AM 42 41
6 AM 41 41
7 AM 40 42
8 AM 40 42
9 AM 40 43
10 AM 40 43
11 AM -- 44
12 PM 44 43
1 PM 46 41
2 PM 44 39
3 PM 43 38
4 PM 44 38
5 PM 44 38
6 PM 44 38
7 PM 36 37
8 PM 30 --
9 PM 30 --
10 PM 35 --
11 PM 42 --
Weather and Ozone Data Saturday April 25, 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 46 1.5 SW 14.0 50 0 0.0
1 AM 45 1.5 W 13.7 50 0 0.0
2 AM 43 1.8 NW 12.9 54 0 0.0
3 AM 41 1.6 SE 12.1 56 0 0.0
4 AM 41 1.5 NW 11.8 56 0 0.0
5 AM 42 2.2 SW 11.9 56 0 0.0
6 AM 41 0.9 S 11.5 60 0 0.0
7 AM 40 2.2 E 11.6 57 63 0.0
8 AM 40 1.4 SE 13.8 50 279 0.0
9 AM 40 2.1 SW 14.7 45 247 0.0
10 AM 40 2.4 W 13.5 50 109 0.0
11 AM -- 1.4 W 14.2 49 397 0.0
12 PM 44 1.8 W 16.0 45 636 0.0
1 PM 46 2.6 W 16.6 43 560 0.0
2 PM 44 2.2 W 15.3 49 232 0.0
3 PM 43 2.0 SW 15.0 52 225 0.0
4 PM 44 2.0 W 14.6 55 173 0.0
5 PM 44 3.0 W 15.8 51 507 0.0
6 PM 44 1.9 W 15.2 53 263 0.0
7 PM 36 3.7 SW 13.8 57 40 0.0
8 PM 30 3.2 SW 11.6 80 1 0.6
9 PM 30 5.8 W 11.4 78 0 0.0
10 PM 35 7.3 W 11.5 73 0 0.0
11 PM 42 5.5 NW 11.5 66 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 04/26/2015 1:41 AM  I   http://nature.nps.gov/air/data/current/data_JOTR-CC2.cfm   I  Email: Webmaster