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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  > Twin Cities Hourly AQI  > Twin Cities Raw Data

Minnesota Pollution Control Agency
Twin Cities Hourly Ozone 8 Hour Rolling
April 27, 2012
<< Previous Day Next Day >>
Ozone 8 Hour Rolling
Parts per Million
Sites
Hour050532015302601060126015
0 0.031 0.035 0.035 0.036 0.034 0.040
1 0.030 0.033 0.034 0.034 0.030 0.038
2 0.030 0.030 0.034 0.032 0.026 0.036
3 0.030 0.028 0.034 0.031 0.023 0.034
4 0.031 0.027 0.035 0.031 0.021 0.033
5 0.032 0.026 0.036 0.030 0.021 0.032
6 0.034 0.025 0.036 0.030 0.022 0.032
7 0.037 0.026 0.036 0.032 0.024 0.033
8 0.038 0.027 0.037 0.034 0.027 0.035
9 0.039 0.029 0.038 0.036 0.031 0.037
10 0.039 0.030 0.038 0.038 0.034 0.039
11 0.039 0.033 0.039 0.039 0.038 0.041
12 0.040 0.036 0.040 0.041 0.042 0.043
13 0.041 0.039 0.040 0.044 0.045 0.044
14 0.042 0.042 0.041 0.045 0.047 0.047
15 0.043 0.043 0.043 0.047 0.048 0.049
16 0.043 0.044 0.044 0.048 0.049 0.050
17 0.044 0.045 0.045 0.049 0.050 0.051
18 0.044 0.046 0.045 0.050 0.051 0.052
19 0.045 0.046 0.046 0.050 0.052 0.053
20 0.045 0.047 0.046 0.051 0.053 0.053
21 0.045 0.047 0.046 0.051 0.053 0.053
22 0.046 0.048 0.047 0.051 0.053 0.052
23 0.046 0.048 0.047 0.051 0.052 0.052
Ozone 8 Hour Rolling
AQI
Sites
050532015302601060126015
26 29 29 30 28 33
25 27 28 28 25 32
25 25 28 27 22 30
25 23 28 26 19 28
26 22 29 26 17 27
27 22 30 25 17 27
28 21 30 25 18 27
31 22 30 27 20 27
32 22 31 28 22 29
33 24 32 30 26 31
33 25 32 32 28 33
33 27 33 33 32 34
33 30 33 34 35 36
34 33 33 37 38 37
35 35 34 38 39 39
36 36 36 39 40 41
36 37 37 40 41 42
37 38 38 41 42 43
37 38 38 42 43 44
38 38 38 42 44 44
38 39 38 43 44 44
38 39 38 43 44 44
38 40 39 43 44 44
38 40 39 43 44 44
      

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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