National Park Service Arrowhead
Explore Air

Current Ozone and Weather Data in National Parks


Joshua Tree National Park - Black Rock, CA
Portable Ozone Monitor


Yesterday's Data   Data Timelines   Ozone Health Advisory  


Ozone Tuesday March 31, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 66 60
1 AM 65 60
2 AM 63 59
3 AM 60 --
4 AM 60 --
5 AM 59 --
6 AM 57 --
7 AM 57 --
Weather and Ozone Data Tuesday March 31, 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 66 4.2 W 18.4 28 0 0.0
1 AM 65 3.7 W 18.5 27 0 0.0
2 AM 63 4.3 W 17.9 25 0 0.0
3 AM 60 3.7 W 17.0 22 0 0.0
4 AM 60 2.6 W 17.3 18 0 0.0
5 AM 59 2.4 W 17.8 15 0 0.0
6 AM 57 4.2 W 16.4 16 0 0.0
7 AM 57 3.7 W 15.3 16 10 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 03/31/2015 8:40 AM  I   http://www2.nature.nps.gov/air/data/current/data_JOTR-BR.cfm   I  Email: Webmaster