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 Tuesday August 19, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 44 39
1 AM 38 40
2 AM 37 43
3 AM 36 45
4 AM 36 47
5 AM 38 49
6 AM 41 51
7 AM 48 51
8 AM 53 50
9 AM 55 49
10 AM 56 48
11 AM 54 47
12 PM 53 47
1 PM 49 47
2 PM 43 46
3 PM 40 47
4 PM 45 49
5 PM 47 50
6 PM 51 50
7 PM 55 49
8 PM 48 47
9 PM 45 47
10 PM 52 47
11 PM 52 47
Weather and Ozone Data Tuesday August 19, 2014
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 44 5.8 SW 22.2 75 0 0.0
1 AM 38 5.8 SW 21.5 82 0 0.0
2 AM 37 5.8 SW 21.4 81 0 0.0
3 AM 36 5.5 SW 20.9 84 0 0.0
4 AM 36 5.0 SW 20.3 87 0 0.0
5 AM 38 5.3 SW 20.2 78 0 0.0
6 AM 41 5.4 SW 19.9 71 0 0.0
7 AM 48 4.7 SW 20.6 46 39 0.0
8 AM 53 4.7 SW 23.0 29 221 0.0
9 AM 55 4.5 SW 24.8 19 439 0.0
10 AM 56 5.0 S 25.7 14 641 0.0
11 AM 54 5.1 S 26.4 16 808 0.0
12 PM 53 6.5 S 27.1 17 926 0.0
1 PM 49 6.2 S 27.7 15 983 0.0
2 PM 43 6.4 S 28.2 20 974 0.0
3 PM 40 6.3 SW 28.5 24 889 0.0
4 PM 45 5.4 SW 28.3 25 778 0.0
5 PM 47 4.8 SW 27.1 27 553 0.0
6 PM 51 4.7 SW 25.8 33 222 0.0
7 PM 55 3.9 SW 24.0 41 43 0.0
8 PM 48 3.9 S 23.0 43 7 0.0
9 PM 45 4.1 S 22.4 38 0 0.0
10 PM 52 3.8 SW 21.6 38 0 0.0
11 PM 52 3.8 SW 21.3 31 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 08/20/2014 6:02 AM  I   http://www2.nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster