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)
27
Good
Duluth, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.95 μg/m³
0
55
155
255
425
605+
22.76 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
13.88 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duluth, Minnesota
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AQI 33
Good
5.55μg/m³
PM2.5
24.70μg/m³
PM10
22.28ppb
O3
0.54ppb
SO2
13.87ppb
NO2
0.25ppm
CO
AQI 27
Good
5.44μg/m³
PM2.5
24.08μg/m³
PM10
22.26ppb
O3
0.54ppb
SO2
13.85ppb
NO2
0.25ppm
CO
AQI 21
Good
3.18μg/m³
PM2.5
12.89μg/m³
PM10
22.90ppb
O3
0.55ppb
SO2
13.84ppb
NO2
0.26ppm
CO
AQI 27
Good
4.71μg/m³
PM2.5
22.55μg/m³
PM10
20.38ppb
O3
0.69ppb
SO2
11.00ppb
NO2
0.26ppm
CO
AQI 17
Good
3.21μg/m³
PM2.5
14.00μg/m³
PM10
17.51ppb
O3
0.02ppb
SO2
1.46ppb
NO2
0.20ppm
CO
AQI 17
Good
3.13μg/m³
PM2.5
8.50μg/m³
PM10
17.54ppb
O3
0.47ppb
SO2
11.94ppb
NO2
0.25ppm
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 01:00:00 on 2026-03-14.
In the last 24 hrs, the best air quality in Duluth, Minnesota was observed at 11:00:00 on 2026-03-14.
The current air quality in Duluth, Minnesota is 27, 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 4.662 μg/m3.
The current PM10 concentration at Duluth, Minnesota is 20.954 μg/m3.
The current carbon monoxide (CO) concentration at Duluth, Minnesota is 0.253 ppm.
The current sulfur dioxide (SO2) concentration at Duluth, Minnesota is 0.537 ppb.
The current ozone (O3) concentration at Duluth, Minnesota is 22.759 ppm.
The current nitrogen dioxide (NO2) concentration at Duluth, Minnesota is 13.88 ppb.
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