Stay updated with real-time air quality in Northfield, 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)
60
Moderate
Northfield, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
55.73 μg/m³
0
55
155
255
425
605+
30.07 ppb
0
55
71
86
201
201+
0.83 ppb
0
36
76
186
605
1005+
4.72 ppb
0
54
101
361
1250
2050+
0.37 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northfield, Minnesota
Northfield, Minnesota
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AQI 54
Moderate
11.20μg/m³
PM2.5
46.12μg/m³
PM10
29.33ppb
O3
0.81ppb
SO2
4.73ppb
NO2
0.36ppm
CO
AQI 58
Moderate
13.23μg/m³
PM2.5
59.54μg/m³
PM10
28.94ppb
O3
0.90ppb
SO2
6.18ppb
NO2
0.43ppm
CO
AQI 60
Moderate
13.56μg/m³
PM2.5
61.11μg/m³
PM10
28.99ppb
O3
0.90ppb
SO2
6.80ppb
NO2
0.46ppm
CO
AQI 62
Moderate
15.08μg/m³
PM2.5
66.99μg/m³
PM10
29.06ppb
O3
0.92ppb
SO2
6.25ppb
NO2
0.43ppm
CO
AQI 60
Moderate
13.60μg/m³
PM2.5
49.11μg/m³
PM10
29.13ppb
O3
0.88ppb
SO2
5.94ppb
NO2
0.38ppm
CO
AQI 58
Moderate
12.56μg/m³
PM2.5
45.88μg/m³
PM10
28.14ppb
O3
0.90ppb
SO2
5.62ppb
NO2
0.37ppm
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 Northfield, Minnesota is updated on an hourly basis.
The worst air quality in Northfield, Minnesota was recorded at 06:00:00 on 2026-08-14.
The best air quality in Northfield, Minnesota was recorded at 03:00:00 on 2026-08-14.
The real-time air quality index in Northfield, Minnesota is 60, currently categorized as Moderate.
The most common pollutant in Northfield, Minnesota is PM2.5.
If the air quality in Northfield, Minnesota is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Northfield, Minnesota at present are 13.937 μg/m3.
The current PM10 levels in Northfield, Minnesota are 55.732 μg/m3.
The current carbon monoxide (CO) level in Northfield, Minnesota is 0.367 ppm.
The current sulfur dioxide (SO2) levels in Northfield, Minnesota are 0.828 ppb.
The current ozone (O3) levels at Northfield, Minnesota is 30.068 ppm.
The current nitrogen dioxide (NO2) levels at Northfield, Minnesota is 4.722 ppb.
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