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)
40
Good
Duluth, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.20 μg/m³
0
55
155
255
425
605+
42.71 ppb
0
55
71
86
201
201+
0.77 ppb
0
36
76
186
605
1005+
3.48 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 39
Good
2.54μg/m³
PM2.5
10.58μg/m³
PM10
42.14ppb
O3
0.77ppb
SO2
3.49ppb
NO2
0.29ppm
CO
AQI 39
Good
2.50μg/m³
PM2.5
10.43μg/m³
PM10
42.02ppb
O3
0.77ppb
SO2
3.49ppb
NO2
0.29ppm
CO
AQI 38
Good
1.94μg/m³
PM2.5
8.17μg/m³
PM10
41.09ppb
O3
0.76ppb
SO2
3.51ppb
NO2
0.29ppm
CO
AQI 34
Good
2.48μg/m³
PM2.5
10.09μg/m³
PM10
37.47ppb
O3
0.90ppb
SO2
3.37ppb
NO2
0.29ppm
CO
AQI 31
Good
1.07μg/m³
PM2.5
4.27μg/m³
PM10
32.99ppb
O3
0.20ppb
SO2
0.39ppb
NO2
0.13ppm
CO
AQI 38
Good
2.23μg/m³
PM2.5
12.98μg/m³
PM10
40.90ppb
O3
0.72ppb
SO2
3.79ppb
NO2
0.31ppm
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 07:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 08:00:00 on 2026-03-09.
The current air quality in Duluth, Minnesota is 40, categorized as Good based on real-time data.
The most common pollutant in Duluth, Minnesota is O3.
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 2.516 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 10.203 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.29 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.769 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 42.712 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 3.479 ppb.
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