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 Monday August 3, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 43 43
1 AM 41 43
2 AM 40 43
3 AM 42 44
4 AM 46 44
5 AM 47 44
6 AM 45 46
7 AM 42 47
8 AM 44 49
9 AM 41 51
10 AM 45 55
11 AM 45 58
12 PM 48 61
1 PM 58 62
2 PM 59 63
3 PM 54 62
4 PM 65 61
5 PM 69 57
6 PM 72 53
7 PM 66 50
8 PM 60 48
9 PM 60 --
10 PM 53 --
11 PM 47 --
Weather and Ozone Data Monday August 3, 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 43 3.3 SW 27.1 17 0 0.0
1 AM 41 3.9 SW 26.8 17 0 0.0
2 AM 40 3.4 SW 25.9 17 0 0.0
3 AM 42 3.4 SW 25.6 16 0 0.0
4 AM 46 3.1 S 24.9 16 0 0.0
5 AM 47 3.5 SW 25.1 13 0 0.0
6 AM 45 2.8 SW 23.6 14 1 0.0
7 AM 42 3.0 S 24.0 14 67 0.0
8 AM 44 1.5 S 29.0 11 262 0.0
9 AM 41 2.6 N 29.3 14 473 0.0
10 AM 45 2.4 N 30.5 15 671 0.0
11 AM 45 3.2 S 32.3 13 838 0.0
12 PM 48 4.1 S 32.8 13 953 0.0
1 PM 58 4.5 S 32.8 15 1003 0.0
2 PM 59 5.0 S 32.9 19 924 0.0
3 PM 54 5.7 S 33.0 17 843 0.0
4 PM 65 5.0 SW 33.2 17 794 0.0
5 PM 69 5.2 SW 32.4 17 499 0.0
6 PM 72 5.0 SW 32.0 16 382 0.0
7 PM 66 5.1 SW 30.7 14 182 0.0
8 PM 60 4.8 SW 28.4 10 8 0.0
9 PM 60 4.7 SW 27.1 11 0 0.0
10 PM 53 4.3 SW 26.8 11 0 0.0
11 PM 47 4.5 SW 27.3 9 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 08/04/2015 2:45 AM  I   http://nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster