MPCA Air Quality Index for Minnesota

AQI Locations:

Rochester
Brainerd
Duluth
Ely
St Cloud
Twin Cities
Marshall
Detroit Lakes
Grand Portage

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 Twin Cities Hourly AQI July 06 2009
<< 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
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
0
0
0
0
0
0

Ozone
13
12
11
10
8
6
8
16
21
24
29
33
39
40
39
40
40
39
38
35
28
21
19
17

Ozone 8hr
24
22
19
16
14
11
10
9
11
13
16
18
22
25
30
33
37
40
42
42
39
36
33
27

PM 2.5
102
89
79
71
64
57
57
57
54
54
54
54
54
57
54
54
54
54
54
54
54
54
52
48

Sulfur Dioxide
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

AQI Max
102
89
79
71
64
57
57
57
54
54
54
54
54
57
54
54
54
54
54
54
54
54
52
48

* 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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