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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 8 Hour Rolling
May 18, 2012
<< Previous Day Next Day >>
Ozone 8 Hour Rolling
Parts per Million
Sites
Hour5008
0 0.053
1 0.051
2 0.050
3 0.049
4 0.049
5 0.049
6 0.050
7 0.051
8 0.053
9 0.055
10 0.057
11 0.059
12 0.062
13 0.064
14 0.065
15 0.066
16 0.066
17 0.067
18 0.067
19 0.065
20 0.063
21 0.062
22 0.061
23 0.060
Ozone 8 Hour Rolling
AQI
Sites
5008
44
43
42
41
41
41
42
43
44
46
48
50
57
64
67
70
70
73
73
67
60
57
54
51
      

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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