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)
56
Moderate
Duluth, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
54.54 μg/m³
0
55
155
255
425
605+
36.70 ppb
0
55
71
86
201
201+
0.81 ppb
0
36
76
186
605
1005+
3.99 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 56
Moderate
12.31μg/m³
PM2.5
55.49μg/m³
PM10
38.08ppb
O3
0.80ppb
SO2
4.01ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.20μg/m³
PM2.5
54.73μg/m³
PM10
38.00ppb
O3
0.80ppb
SO2
4.01ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.44μg/m³
PM2.5
46.47μg/m³
PM10
35.28ppb
O3
0.75ppb
SO2
4.09ppb
NO2
0.21ppm
CO
AQI 54
Moderate
11.46μg/m³
PM2.5
51.65μg/m³
PM10
36.68ppb
O3
0.77ppb
SO2
4.00ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.30μg/m³
PM2.5
55.49μg/m³
PM10
41.06ppb
O3
0.13ppb
SO2
0.18ppb
NO2
0.16ppm
CO
AQI 44
Good
6.46μg/m³
PM2.5
48.06μg/m³
PM10
48.10ppb
O3
0.72ppb
SO2
4.38ppb
NO2
0.22ppm
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 08:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 02:00:00 on 2026-07-23.
The current air quality in Duluth, Minnesota is 56, categorized as Moderate 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 12.044 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 54.538 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.212 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.806 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 36.704 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 3.99 ppb.
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