Stay updated with real-time air quality in Marshall, 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)
37
Good
Marshall, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.03 μg/m³
0
55
155
255
425
605+
39.98 ppb
0
55
71
86
201
201+
4.42 ppb
0
36
76
186
605
1005+
3.41 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshall, Minnesota
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AQI 35
Good
5.77μg/m³
PM2.5
24.84μg/m³
PM10
37.91ppb
O3
4.90ppb
SO2
2.99ppb
NO2
0.28ppm
CO
AQI 41
Good
3.50μg/m³
PM2.5
15.37μg/m³
PM10
43.63ppb
O3
0.19ppb
SO2
0.52ppb
NO2
0.13ppm
CO
AQI 35
Good
1.58μg/m³
PM2.5
6.19μg/m³
PM10
37.79ppb
O3
0.19ppb
SO2
0.42ppb
NO2
0.14ppm
CO
AQI 33
Good
4.20μg/m³
PM2.5
15.06μg/m³
PM10
35.58ppb
O3
3.20ppb
SO2
3.67ppb
NO2
0.30ppm
CO
AQI 31
Good
3.29μg/m³
PM2.5
15.46μg/m³
PM10
34.47ppb
O3
6.05ppb
SO2
3.63ppb
NO2
0.27ppm
CO
AQI 22
Good
3.90μg/m³
PM2.5
10.00μg/m³
PM10
24.00ppb
O3
4.23ppb
SO2
2.75ppb
NO2
0.28ppm
CO
Air quality measurements for Minnesota, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Marshall, Minnesota is updated on an hourly basis.
The worst air quality in Marshall, Minnesota was recorded at 12:00:00 on 2026-03-09.
The best air quality in Marshall, Minnesota was recorded at 10:00:00 on 2026-03-09.
The real-time air quality index in Marshall, Minnesota is 37, currently categorized as Good.
The most common pollutant in Marshall, Minnesota is O3.
If the air quality in Marshall, Minnesota is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Marshall, Minnesota at present are 3.702 μg/m3.
The current PM10 levels in Marshall, Minnesota are 8.032 μg/m3.
The current carbon monoxide (CO) level in Marshall, Minnesota is 0.286 ppm.
The current sulfur dioxide (SO2) levels in Marshall, Minnesota are 4.417 ppb.
The current ozone (O3) levels at Marshall, Minnesota is 39.98 ppm.
The current nitrogen dioxide (NO2) levels at Marshall, Minnesota is 3.407 ppb.
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