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)
38
Good
Duluth, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.91 μg/m³
0
55
155
255
425
605+
33.01 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
2.21 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 38
Good
6.69μg/m³
PM2.5
29.70μg/m³
PM10
33.02ppb
O3
0.42ppb
SO2
2.21ppb
NO2
0.18ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
29.15μg/m³
PM10
32.81ppb
O3
0.42ppb
SO2
2.21ppb
NO2
0.18ppm
CO
AQI 28
Good
5.49μg/m³
PM2.5
23.44μg/m³
PM10
30.20ppb
O3
0.41ppb
SO2
2.20ppb
NO2
0.18ppm
CO
AQI 33
Good
5.74μg/m³
PM2.5
19.45μg/m³
PM10
30.16ppb
O3
0.54ppb
SO2
2.12ppb
NO2
0.18ppm
CO
AQI 19
Good
1.93μg/m³
PM2.5
8.00μg/m³
PM10
20.90ppb
O3
0.05ppb
SO2
0.53ppb
NO2
0.13ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
20.84μg/m³
PM10
20.89ppb
O3
0.24ppb
SO2
2.42ppb
NO2
0.18ppm
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 04:00:00 on 2026-01-23.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 03:00:00 on 2026-01-22.
The current air quality in Duluth, Minnesota is 38, 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 6.633 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 29.913 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.176 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.426 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 33.013 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 2.205 ppb.
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