National Park Service Arrowhead
Explore Air

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 Saturday January 24, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 37 36
1 AM 37 36
2 AM 38 35
3 AM 34 35
4 AM 36 36
5 AM 36 37
6 AM 36 37
7 AM 35 38
8 AM 36 39
9 AM 36 40
10 AM 38 41
11 AM 39 41
12 PM 41 41
1 PM 42 41
2 PM 42 40
3 PM 43 40
4 PM 43 40
5 PM 41 39
6 PM 40 39
7 PM 40 38
8 PM 39 38
9 PM 39 38
10 PM 39 38
11 PM 39 37
Weather and Ozone Data Saturday January 24, 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 37 -- -- 8.3 21 0 0.0
1 AM 37 -- -- 8.3 21 0 0.0
2 AM 38 -- -- 8.5 22 0 0.0
3 AM 34 -- -- 8.2 24 0 0.0
4 AM 36 -- -- 6.8 26 0 0.0
5 AM 36 -- -- 7.0 27 0 0.0
6 AM 36 -- -- 7.2 27 0 0.0
7 AM 35 -- -- 6.7 30 2 0.0
8 AM 36 -- -- 6.9 33 79 0.0
9 AM 36 -- -- 9.3 30 298 0.0
10 AM 38 -- -- 10.7 27 469 0.0
11 AM 39 -- -- 11.5 26 592 0.0
12 PM 41 -- -- 12.4 25 656 0.0
1 PM 42 -- -- 13.1 23 655 0.0
2 PM 42 -- -- 13.5 23 587 0.0
3 PM 43 -- -- 13.7 23 410 0.0
4 PM 43 -- -- 13.5 23 289 0.0
5 PM 41 -- -- 11.8 26 20 0.0
6 PM 40 -- -- 8.9 31 1 0.0
7 PM 40 -- -- 8.1 33 0 0.0
8 PM 39 -- -- 7.2 35 0 0.0
9 PM 39 -- -- 8.4 32 0 0.0
10 PM 39 -- -- 7.1 34 0 0.0
11 PM 39 -- -- 6.7 34 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 01/25/2015 8:43 AM  I   http://www.nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster