National Park Service Arrowhead
Explore Air

Current Ozone and Weather Data in National Parks


Yosemite National Park - Turtleback Dome, CA
EPA AQS Site Number: 06-043-0003


Yesterday's Data   Data Timelines   Ozone Health Advisory  


Ozone Friday October 20, 2017 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 32
1 AM 32 33
2 AM 30 34
3 AM 29 35
4 AM 26 35
5 AM 26 37
6 AM 37 38
7 AM 43 38
8 AM 44 37
9 AM 38 36
10 AM 37 36
11 AM 35 --
12 PM 37 --
1 PM 37 --
2 PM 37 --
3 PM 37 --
Weather and Ozone Data Friday October 20, 2017
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 38 3.5 SW 8.3 79 0 0.0
1 AM 32 4.0 SW 7.4 90 0 0.0
2 AM 30 2.6 W 7.3 93 0 0.0
3 AM 29 5.6 SW 7.0 95 0 0.0
4 AM 26 10.1 SW 6.4 95 0 0.0
5 AM 26 10.0 SW 5.6 96 0 0.0
6 AM 37 8.1 SW 3.7 96 0 0.0
7 AM 43 3.3 SE 2.9 96 0 0.0
8 AM 44 3.8 E 3.1 83 15 0.0
9 AM 38 2.5 E 3.5 86 162 0.0
10 AM 37 2.1 SE 4.2 82 329 0.0
11 AM 35 1.8 SW 5.4 75 441 0.0
12 PM 37 3.7 SW 5.9 68 542 0.0
1 PM 37 4.2 SW 5.8 78 652 0.0
2 PM 37 5.1 SW 6.5 74 620 0.0
3 PM 37 5.0 SW 6.2 75 443 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 10/20/2017 6:48 PM  I   http://www.nature.nps.gov/air/data/current/data_YOSE-TD.cfm   I  Email: Webmaster