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 Sunday July 27, 2014 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 49 43
1 AM 46 42
2 AM 42 42
3 AM 42 40
4 AM 41 39
5 AM 41 39
6 AM 43 40
7 AM 43 41
8 AM 44 41
9 AM 41 42
10 AM 30 43
11 AM 35 47
12 PM 42 51
1 PM 46 54
2 PM 47 56
3 PM 48 58
4 PM 49 60
5 PM 50 62
6 PM 63 64
7 PM 67 64
8 PM 65 63
9 PM 60 62
10 PM 63 61
11 PM 68 60
Weather and Ozone Data Sunday July 27, 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 49 3.9 SW 27.9 31 0 0.0
1 AM 46 3.5 SW 27.5 32 0 0.0
2 AM 42 3.3 SW 27.2 33 0 0.0
3 AM 42 2.8 S 26.9 33 0 0.0
4 AM 41 3.0 S 25.1 36 0 0.0
5 AM 41 3.7 S 24.1 39 0 0.0
6 AM 43 3.5 S 24.5 38 1 0.0
7 AM 43 2.7 SW 25.6 36 43 0.0
8 AM 44 2.7 SW 27.6 32 125 0.0
9 AM 41 5.4 SW 26.3 36 332 0.0
10 AM 30 7.7 S 24.2 62 544 0.0
11 AM 35 8.1 S 24.0 61 657 0.0
12 PM 42 7.6 S 25.3 51 743 0.0
1 PM 46 6.0 S 25.8 47 586 0.0
2 PM 47 4.2 S 27.0 44 644 0.0
3 PM 48 4.1 SW 28.4 38 597 0.0
4 PM 49 3.5 SW 28.8 38 528 0.0
5 PM 50 3.8 SW 29.4 36 418 0.0
6 PM 63 4.9 SW 28.0 43 164 0.0
7 PM 67 3.7 SW 27.4 44 54 0.0
8 PM 65 2.7 SW 26.8 44 14 0.0
9 PM 60 2.4 S 26.6 43 0 0.0
10 PM 63 3.0 SW 26.0 45 0 0.0
11 PM 68 3.9 SW 25.2 49 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 07/28/2014 7:41 PM  I   http://www.nature.nps.gov/air/data/current/data_JOTR-BR2.cfm   I  Email: Webmaster