National Park Service Arrowhead
Explore Air

Current Ozone and Weather Data in National Parks


Grand Canyon National Park - The Abyss, AZ
EPA AQS Site Number: 04-005-8001


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Wednesday February 25, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 48 46
1 AM 48 46
2 AM 48 45
3 AM 48 44
4 AM 48 43
5 AM 46 43
6 AM 43 42
7 AM 44 42
8 AM 43 42
9 AM 42 42
10 AM 42 42
11 AM 42 42
12 PM 43 42
1 PM 42 42
2 PM 42 42
3 PM 42 42
4 PM 41 41
5 PM 42 41
6 PM 43 42
7 PM 42 41
8 PM 42 41
9 PM 42 42
10 PM 42 42
11 PM 40 42
Weather and Ozone Data Wednesday February 25, 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 48 2.4 NW 0.1 73 0 0.0
1 AM 48 2.2 NW 0.2 66 0 0.0
2 AM 48 1.9 NW 0.7 60 0 0.0
3 AM 48 1.9 NW 0.7 56 0 0.0
4 AM 48 2.9 NW 0.8 55 0 0.0
5 AM 46 1.8 NW 0.9 55 0 0.0
6 AM 43 1.8 W 0.6 56 0 0.0
7 AM 44 1.5 NW 1.8 49 0 0.0
8 AM 43 2.1 NW 2.1 47 41 0.0
9 AM 42 1.7 NW 3.2 44 233 0.0
10 AM 42 1.9 W 4.2 42 416 0.0
11 AM 42 2.4 NW 5.0 40 533 0.0
12 PM 43 2.9 NW 5.2 39 674 0.0
1 PM 42 2.8 NW 5.7 38 716 0.0
2 PM 42 3.3 NW 6.0 39 695 0.0
3 PM 42 3.4 NW 6.5 40 617 0.0
4 PM 41 3.4 NW 6.8 39 486 0.0
5 PM 42 3.1 NW 6.6 39 311 0.0
6 PM 43 3.4 NW 6.0 42 119 0.0
7 PM 42 2.6 N 5.1 46 5 0.0
8 PM 42 1.4 NW 5.3 45 0 0.0
9 PM 42 1.0 NW 5.1 46 0 0.0
10 PM 42 1.3 NW 5.1 46 0 0.0
11 PM 40 1.1 SE 3.9 51 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 02/26/2015 3:44 PM  I   http://www2.nature.nps.gov/air/data/current/data_GRCA-AS2.cfm   I  Email: Webmaster