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 March 3, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 41 35
1 AM 40 35
2 AM 35 35
3 AM 36 35
4 AM 35 35
5 AM 32 --
6 AM 32 --
7 AM 34 --
8 AM 37 --
9 AM 41 --
10 AM -- --
11 AM -- 49
12 PM -- 48
1 PM 49 46
2 PM 50 45
3 PM 51 43
4 PM 51 41
5 PM 51 40
6 PM 44 38
7 PM 40 37
8 PM 38 36
9 PM 36 35
10 PM 36 36
11 PM 38 36
Weather and Ozone Data Tuesday March 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 41 4.3 SW 2.7 77 0 0.0
1 AM 40 3.9 S 1.9 80 0 0.0
2 AM 35 3.0 SW 0.5 83 0 0.0
3 AM 36 2.6 SW 0.2 80 0 0.0
4 AM 35 2.4 SW -0.2 82 0 0.0
5 AM 32 2.7 SW -0.1 84 0 0.0
6 AM 32 3.0 SW -0.1 87 0 0.0
7 AM 34 2.4 SW 0.4 91 39 0.0
8 AM 37 1.1 NE 3.6 80 237 0.0
9 AM 41 1.2 NE 5.3 67 447 0.0
10 AM -- -- -- 6.6 61 633 --
11 AM -- 2.5 N 7.6 58 783 --
12 PM -- 3.1 NE 8.5 55 769 0.0
1 PM 49 2.4 NE 8.9 48 865 0.0
2 PM 50 2.1 NE 9.0 43 487 0.0
3 PM 51 2.0 NE 9.0 45 357 0.0
4 PM 51 1.8 N 9.2 42 383 0.0
5 PM 51 0.7 W 8.7 44 149 0.0
6 PM 44 1.0 SW 6.4 61 14 0.0
7 PM 40 2.5 S 5.8 70 0 0.0
8 PM 38 2.8 S 4.8 71 0 0.0
9 PM 36 2.7 SW 5.0 71 0 0.0
10 PM 36 2.4 SW 5.2 71 0 0.0
11 PM 38 1.2 SW 4.2 74 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 03/04/2015 10:42 PM  I   http://nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster