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 Wednesday September 28, 2016 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 38
1 AM 39 38
2 AM 39 38
3 AM 40 39
4 AM 39 39
5 AM 36 40
6 AM 37 42
7 AM 38 44
8 AM 37 46
9 AM 42 47
10 AM 47 49
11 AM -- 50
12 PM 47 50
1 PM 49 50
2 PM 50 50
3 PM 50 50
4 PM 50 50
5 PM 51 50
6 PM 53 50
7 PM 52 50
8 PM 50 50
9 PM 49 50
10 PM 50 51
11 PM 51 51
Weather and Ozone Data Wednesday September 28, 2016
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 38 1.7 N 19.9 46 0 0.0
1 AM 39 2.5 N 20.4 45 0 0.0
2 AM 39 2.9 N 20.5 45 0 0.0
3 AM 40 2.4 N 20.7 44 0 0.0
4 AM 39 2.1 N 20.6 44 0 0.0
5 AM 36 2.6 NE 19.9 47 0 0.0
6 AM 37 2.9 N 19.9 48 0 0.0
7 AM 38 3.2 N 19.7 48 6 0.0
8 AM 37 2.8 N 19.8 48 140 0.0
9 AM 42 2.7 NE 22.5 40 349 0.0
10 AM 47 3.9 NE 23.7 36 524 0.0
11 AM -- 5.2 NE 24.0 36 668 0.0
12 PM 47 4.2 NE 24.7 34 759 0.0
1 PM 49 2.2 SE 26.7 29 893 0.0
2 PM 50 2.4 SE 27.3 26 948 0.0
3 PM 50 2.2 SE 27.5 26 824 0.0
4 PM 50 2.6 S 27.6 26 506 0.0
5 PM 51 2.8 S 26.7 27 130 0.0
6 PM 53 2.1 S 26.2 30 29 0.0
7 PM 52 1.0 SW 25.3 32 6 0.0
8 PM 50 0.4 SW 24.2 34 0 0.0
9 PM 49 0.5 E 23.6 36 0 0.0
10 PM 50 0.8 W 23.6 36 0 0.0
11 PM 51 0.6 W 23.4 35 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 09/29/2016 8:41 AM  I   http://nature.nps.gov/air/data/current/data_JOTR-CC2.cfm   I  Email: Webmaster