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)
18
Good
Duluth, Minnesota
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
0.47 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
1.99 μg/m³
0
55
155
255
425
605+
18.82 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
2.43 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 18
Good
0.42μg/m³
PM2.5
1.96μg/m³
PM10
19.09ppb
O3
0.79ppb
SO2
2.52ppb
NO2
0.21ppm
CO
AQI 18
Good
0.40μg/m³
PM2.5
1.85μg/m³
PM10
18.90ppb
O3
0.79ppb
SO2
2.52ppb
NO2
0.21ppm
CO
AQI 15
Good
0.13μg/m³
PM2.5
0.35μg/m³
PM10
16.24ppb
O3
0.78ppb
SO2
2.56ppb
NO2
0.21ppm
CO
AQI 19
Good
0.32μg/m³
PM2.5
1.56μg/m³
PM10
20.04ppb
O3
0.79ppb
SO2
2.48ppb
NO2
0.21ppm
CO
AQI 22
Good
0.25μg/m³
PM2.5
1.00μg/m³
PM10
24.41ppb
O3
0.04ppb
SO2
0.44ppb
NO2
0.12ppm
CO
AQI 19
Good
1.24μg/m³
PM2.5
4.04μg/m³
PM10
20.29ppb
O3
0.69ppb
SO2
2.85ppb
NO2
0.21ppm
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 02:00:00 on 2025-10-21.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 11:00:00 on 2025-10-21.
The current air quality in Duluth, Minnesota is 18, 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 0.475 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 1.988 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 0.796 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 18.825 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 2.434 ppb.
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