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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.

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 Ozone 8 Hour Rolling
May 06, 2012
<< Previous Day Next Day >>
Ozone 8 Hour Rolling
Parts per Million
Sites
Hour74167550
0 0.030 0.031
1 0.030 0.032
2 0.031 0.032
3 0.031 0.032
4 0.031 0.032
5 0.031 0.031
6 0.031 0.031
7 0.031 0.031
8 0.031 0.030
9 0.031 0.030
10 0.031 0.030
11 0.031 0.030
12 0.032 0.030
13 0.033 0.030
14 0.034 0.031
15 0.034 0.031
16 0.035 0.032
17 0.035 0.032
18 0.036 0.032
19 0.036 0.032
20 0.035 0.032
21 0.035 0.032
22 0.034 0.032
23 0.034 0.032
Ozone 8 Hour Rolling
AQI
Sites
74167550
25 26
25 27
26 27
26 27
26 27
26 26
26 26
26 26
26 25
26 25
26 25
26 25
27 25
27 25
28 26
28 26
29 27
29 27
30 27
30 27
29 27
29 27
28 27
28 27
      

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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