MPCA Air Quality Index for Minnesota

AQI Locations:

Rochester
Brainerd
Duluth
Ely
St Cloud
Twin Cities
Marshall
Detroit Lakes

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.

AQI 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

Minnesota Pollution Control Agency Marshall Hourly AQI March 28 2012
<< Previous Day		Next Day >>

Hour
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

Carbon Monoxide

Ozone
17
15
12
10
9
8
7
10
17
18
19
22
25
28
28
29
29
28
23
17
14
16
19
19

Ozone 8hr
20
18
16
16
15
14
13
12
12
12
13
15
17
20
23
26
27
28
29
28
27
25
24
22

PM 2.5
22
22
22
22
19
19
16
16
16
16
16
12
12
9
9
9
9
6
6
6
6
6
6
6

Sulfur Dioxide

AQI Max
22
22
22
22
19
19
16
16
17
18
19
22
25
28
28
29
29
28
29
28
27
25
24
22

* Data is not quality assured at this time.
** Ozone levels, which are only elevated in warm weather, are measured from April 1st through September 30th in Minnesota and are not collected outside of that period.
The AQI is updated hourly between 6:00 a.m. and Midnight

If you have suggestions on how we can improve this site, or if you have questions or problems, please contact us.
If you have technical questions or problems with this site, contact webmaster@pca.state.mn.us
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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