National Park Service Arrowhead
Explore Air

Current Ozone and Weather Data in National Parks


Theodore Roosevelt National Park - Visitor Center, ND
EPA AQS Site Number: 38-007-0002


Today's Data   Data Timelines   Ozone Health Advisory  
Ozone Friday September 4, 2015 
Hour Ending
(Local Time)
1-Hour Average
(parts per billion)
8-Hour Average
(parts per billion)
12 AM 38 28
1 AM 31 26
2 AM 25 24
3 AM 26 24
4 AM 29 23
5 AM 29 22
6 AM 25 22
7 AM 23 21
8 AM 21 22
9 AM 21 24
10 AM 22 26
11 AM 21 28
12 PM 21 30
1 PM 22 31
2 PM 24 32
3 PM 28 31
4 PM 34 29
5 PM 37 27
6 PM 39 24
7 PM 36 24
8 PM 34 24
9 PM 24 24
10 PM 16 24
11 PM 15 24
Weather and Ozone Data Friday September 4, 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 38 6.7 NE 20.8 80 -- 0.0
1 AM 31 5.2 N 20.1 85 -- 0.0
2 AM 25 6.0 N 19.7 86 -- 0.0
3 AM 26 7.7 N 18.9 75 -- 0.0
4 AM 29 8.6 N 18.6 73 -- 0.0
5 AM 29 6.9 NE 19.1 82 -- 0.0
6 AM 25 5.5 NE 18.1 83 -- 0.0
7 AM 23 4.7 NE 17.1 91 1 0.7
8 AM 21 4.2 N 17.0 92 58 0.0
9 AM 21 3.7 N 18.0 92 140 0.0
10 AM 22 3.0 NW 18.2 87 103 0.0
11 AM 21 4.4 NW 16.8 81 62 0.0
12 PM 21 5.5 N 16.0 85 156 0.0
1 PM 22 5.7 N 16.8 83 240 0.0
2 PM 24 3.9 N 18.0 78 263 0.0
3 PM 28 2.6 N 19.8 72 283 0.0
4 PM 34 3.4 N 22.0 67 577 0.0
5 PM 37 3.9 NE 23.6 65 402 0.0
6 PM 39 4.1 NE 23.8 67 247 0.0
7 PM 36 4.6 N 23.0 70 97 0.0
8 PM 34 5.0 NE 21.5 76 6 0.0
9 PM 24 5.2 NE 18.6 86 -- 0.0
10 PM 16 5.8 NE 16.7 93 -- 0.0
11 PM 15 5.9 N 16.7 95 -- 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 09/05/2015 6:40 AM  I   http://nature.nps.gov/air/data/current/data_THRO-VC2.cfm   I  Email: Webmaster