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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 08, 2012
<< Previous Day Next Day >>
Ozone 8 Hour Rolling
Parts per Million
Sites
Hour74167550
0 0.035 0.032
1 0.032 0.030
2 0.028 0.028
3 0.024 0.026
4 0.021 0.023
5 0.017 0.020
6 0.014 0.018
7 0.013 0.018
8 0.014 0.018
9 0.016 0.018
10 0.018 0.019
11 0.021 0.021
12 0.025 0.024
13 0.029 0.027
14 0.032 0.030
15 0.033 0.033
16 0.034 0.035
17 0.034 0.037
18 0.035 0.037
19 0.033 0.037
20 0.032 0.036
21 0.030 0.036
22 0.028 0.035
23 0.026 0.033
Ozone 8 Hour Rolling
AQI
Sites
74167550
29 27
27 25
23 23
20 22
17 19
14 16
11 15
11 15
11 15
13 15
15 16
17 17
21 20
24 22
27 25
27 27
28 29
28 31
29 31
27 31
27 30
25 30
23 29
22 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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