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)
174
Unhealthy
Duluth, Minnesota
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
87.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
287.94 μg/m³
0
55
155
255
425
605+
25.73 ppb
0
55
71
86
201
201+
0.95 ppb
0
36
76
186
605
1005+
6.47 ppb
0
54
101
361
1250
2050+
0.69 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 176
Unhealthy
90.67μg/m³
PM2.5
290.11μg/m³
PM10
37.61ppb
O3
1.05ppb
SO2
4.50ppb
NO2
0.63ppm
CO
AQI 175
Unhealthy
90.21μg/m³
PM2.5
288.61μg/m³
PM10
37.28ppb
O3
1.06ppb
SO2
4.50ppb
NO2
0.63ppm
CO
AQI 165
Unhealthy
75.97μg/m³
PM2.5
275.08μg/m³
PM10
33.35ppb
O3
1.09ppb
SO2
4.56ppb
NO2
0.63ppm
CO
AQI 174
Unhealthy
88.27μg/m³
PM2.5
273.87μg/m³
PM10
37.62ppb
O3
1.08ppb
SO2
4.34ppb
NO2
0.63ppm
CO
AQI 112
Unhealthy for sensitive groups
39.69μg/m³
PM2.5
175.48μg/m³
PM10
42.12ppb
O3
0.31ppb
SO2
0.40ppb
NO2
0.31ppm
CO
AQI 165
Unhealthy
76.38μg/m³
PM2.5
211.46μg/m³
PM10
32.74ppb
O3
1.50ppb
SO2
5.09ppb
NO2
0.63ppm
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 2025-07-31.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 03:00:00 on 2025-07-31.
The current air quality in Duluth, Minnesota is 173, categorized as Unhealthy 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 86.579 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 287.416 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.563 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.999 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 40.861 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 4.82 ppb.
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