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 Tuesday October 17, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 49 48
1 AM 49 49
2 AM 48 48
3 AM 48 49
4 AM 49 49
5 AM 49 49
6 AM 49 49
7 AM 50 49
8 AM 50 49
9 AM 48 50
10 AM 49 50
11 AM -- 51
12 PM 50 51
1 PM 50 51
2 PM 49 50
3 PM 51 50
4 PM 53 51
5 PM 53 51
6 PM 52 51
7 PM 51 51
8 PM 49 52
9 PM 49 53
10 PM 49 53
11 PM 52 53
Weather and Ozone Data Tuesday October 17, 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 2.9 N 21.7 9 0 0.0
1 AM 49 2.8 N 21.6 9 0 0.0
2 AM 48 3.1 NE 20.8 10 0 0.0
3 AM 48 3.5 N 20.8 10 0 0.0
4 AM 49 3.5 N 20.0 10 0 0.0
5 AM 49 3.7 NE 20.2 9 0 0.0
6 AM 49 3.6 N 19.6 10 0 0.0
7 AM 50 3.4 N 19.7 10 3 0.0
8 AM 50 3.3 N 20.1 10 109 0.0
9 AM 48 3.4 NE 22.6 9 281 0.0
10 AM 49 3.7 N 25.2 8 503 0.0
11 AM -- 3.4 NE 26.7 7 662 0.0
12 PM 50 3.8 NE 27.6 7 746 0.0
1 PM 50 2.5 NE 28.7 7 770 0.0
2 PM 49 1.7 NE 29.8 7 732 0.0
3 PM 51 1.8 S 30.5 7 624 0.0
4 PM 53 2.2 S 30.3 7 436 0.0
5 PM 53 2.1 SW 30.1 7 98 0.0
6 PM 52 1.1 SW 29.2 8 22 0.0
7 PM 51 0.8 SW 27.1 9 1 0.0
8 PM 49 1.2 SE 26.4 9 0 0.0
9 PM 49 1.4 SW 26.5 9 0 0.0
10 PM 49 0.9 S 26.1 9 0 0.0
11 PM 52 1.3 SW 25.8 8 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 10/18/2017 7:43 AM  I   http://www.nature.nps.gov/air/data/current/data_JOTR-CC2.cfm   I  Email: Webmaster