Stay updated with real-time air quality in Duluth, Minnesota featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Duluth, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.61 μg/m³
0
55
155
255
425
605+
16.30 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
2.44 ppb
0
54
101
361
1250
2050+
0.47 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 33
Good
6.37μg/m³
PM2.5
28.77μg/m³
PM10
16.86ppb
O3
0.78ppb
SO2
2.46ppb
NO2
0.47ppm
CO
AQI 33
Good
6.31μg/m³
PM2.5
28.38μg/m³
PM10
16.67ppb
O3
0.78ppb
SO2
2.46ppb
NO2
0.47ppm
CO
AQI 27
Good
5.37μg/m³
PM2.5
23.34μg/m³
PM10
13.34ppb
O3
0.75ppb
SO2
2.47ppb
NO2
0.47ppm
CO
AQI 33
Good
5.75μg/m³
PM2.5
23.05μg/m³
PM10
17.31ppb
O3
0.87ppb
SO2
2.39ppb
NO2
0.47ppm
CO
AQI 44
Good
8.05μg/m³
PM2.5
35.13μg/m³
PM10
12.92ppb
O3
0.17ppb
SO2
1.40ppb
NO2
0.14ppm
CO
AQI 27
Good
4.96μg/m³
PM2.5
20.39μg/m³
PM10
17.05ppb
O3
0.79ppb
SO2
2.85ppb
NO2
0.53ppm
CO
Air quality data and pollutant measurements for Minnesota, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Duluth, Minnesota is updated every hour.
The worst air quality in Duluth, Minnesota in the last 24 hours was observed at 03:00:00 on 2026-09-07.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 06:00:00 on 2026-09-06.
The current air quality in Duluth, Minnesota is 33, categorized as Good based on real-time data.
The most common pollutant in Duluth, Minnesota is PM2.5.
If the air quality in Duluth, Minnesota is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Duluth, Minnesota is 6.127 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 27.614 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.465 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.777 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 16.295 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 2.444 ppb.
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