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 May 04 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
3
2
0
0
5
14
15
21
25
30
34
32
26
27
32
31
35
35
35
29
26
23
21
21

Ozone 8hr
28
22
16
11
8
6
6
9
11
16
20
24
27
28
31
32
33
34
34
33
33
33
32
30

PM 2.5
32
32
32
29
29
29
29
25
25
29
25
25
25
25
25
25
25
25
25
25
25
25
25
25

Sulfur Dioxide

AQI Max
32
32
32
29
29
29
29
25
25
30
34
32
27
28
32
32
35
35
35
33
33
33
32
30

* 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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