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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.

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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 Ozone 8 Hour Rolling
May 05, 2012
<< Previous Day Next Day >>
Ozone 8 Hour Rolling
Parts per Million
Sites
Hour74167550
0 0.039 0.034
1 0.039 0.034
2 0.038 0.033
3 0.037 0.033
4 0.035 0.032
5 0.034 0.030
6 0.032 0.029
7 0.031 0.027
8 0.029 0.026
9 0.029 0.025
10 0.029 0.025
11 0.029 0.025
12 0.029 0.025
13 0.029 0.026
14 0.030 0.026
15 0.030 0.027
16 0.030 0.028
17 0.031 0.028
18 0.031 0.029
19 0.030 0.029
20 0.030 0.030
21 0.031 0.030
22 0.030 0.031
23 0.030 0.031
Ozone 8 Hour Rolling
AQI
Sites
74167550
33 28
33 28
32 27
31 27
29 27
28 25
27 24
26 22
24 22
24 21
24 21
24 21
24 21
24 22
25 22
25 22
25 23
26 23
26 24
25 24
25 25
26 25
25 26
25 26
      

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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