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Air Quality Index

AQI Locations:

Rochester
Brainerd
Duluth
Ely
St Cloud
Twin Cities
Marshall
Detroit Lakes

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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  > Duluth Hourly AQI  > Duluth Raw Data

Minnesota Pollution Control Agency
Duluth Hourly Carbon Monoxide (CO)
March 21, 2012
<< Previous Day Next Day >>
Carbon Monoxide (CO)
Parts per Million
Sites
Hour7526
0 0.000
1 0.000
2 0.000
3 0.000
4 0.000
5 0.000
6 0.000
7 0.000
8 0.000
9 0.100
10 0.100
11 0.100
12 0.200
13 0.200
14 0.200
15 0.200
16 0.200
17 0.200
18 0.300
19 0.300
20 0.300
21 0.300
22 0.300
23 0.300
Carbon Monoxide (CO)
AQI
Sites
7526
0
0
0
0
0
0
0
0
0
1
1
1
2
2
2
2
2
2
3
3
3
3
3
3
      

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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