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Air Quality Index

AQI Locations:

Rochester
Brainerd
Duluth
Ely
St Cloud
Twin Cities
Marshall
Detroit Lakes

Sign up for air quality alerts and forecasts

Call the AQI Hotline for daily air quality forecasts for the Twin Cities and Rochester at 651-297-1630 (metro) or 1-800-657-3694.

PDF DocumentAQI Site Help

About the AQI

Pollutant description

Health effects

Cautionary Statements

Breakpoints

Map of Air Quality Stations

Color Legend:
Good 0-50
Moderate 51-100
Unhealthy for Sensitive Groups 101-150
Unhealthy 151-200
Very Unhealthy 201-300

MPCA Home  > Air Quality Index  > Rochester Hourly AQI  > Rochester Raw Data

Minnesota Pollution Control Agency
Rochester Hourly Ozone
April 24, 2012
<< Previous Day Next Day >>
Ozone
Parts per Million
Sites
Hour5008
0 0.005
1 0.002
2 0.004
3 0.012
4 0.017
5 0.022
6 0.030
7 0.034
8 0.038
9 0.043
10 0.050
11 0.056
12 0.059
13 0.061
14 0.062
15 0.064
16 0.065
17 0.065
18 0.061
19 0.052
20 0.046
21 0.037
22 0.030
23 0.033
Ozone
AQI
Sites
5008
3
1
3
9
13
17
23
26
29
33
39
43
46
47
48
50
51
51
47
40
35
28
23
25
      

This page was last updated September 8, 2003

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Minnesota Pollution Control Agency, 520 Lafayette Road, St. Paul, MN 55155-4194
Phone: 651-296-6300, 800-657-3864; 24-hour emergency number: 651-649-5451 or 800-422-0798; TTY: 651-282-5332, TTY 24-hour emergency number: 651-297-5353 or 800-627-3529

 

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