Stay updated with real-time air quality in Monroe City, Michigan 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)
40
Good
Monroe City, Michigan
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.18 μg/m³
0
55
155
255
425
605+
43.45 ppb
0
55
71
86
201
201+
1.09 ppb
0
36
76
186
605
1005+
4.15 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Monroe City, Michigan
Monroe City, Michigan
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AQI 40
Good
5.84μg/m³
PM2.5
22.18μg/m³
PM10
43.45ppb
O3
1.09ppb
SO2
4.15ppb
NO2
0.16ppm
CO
AQI 40
Good
5.84μg/m³
PM2.5
22.18μg/m³
PM10
43.45ppb
O3
1.09ppb
SO2
4.15ppb
NO2
0.16ppm
CO
AQI 45
Good
5.54μg/m³
PM2.5
19.88μg/m³
PM10
49.19ppb
O3
1.09ppb
SO2
2.49ppb
NO2
0.17ppm
CO
AQI 51
Moderate
4.67μg/m³
PM2.5
19.29μg/m³
PM10
54.91ppb
O3
1.09ppb
SO2
5.70ppb
NO2
0.17ppm
CO
AQI 39
Good
5.69μg/m³
PM2.5
23.09μg/m³
PM10
41.91ppb
O3
1.10ppb
SO2
4.37ppb
NO2
0.15ppm
CO
AQI 51
Moderate
4.67μg/m³
PM2.5
19.29μg/m³
PM10
54.91ppb
O3
1.09ppb
SO2
5.70ppb
NO2
0.17ppm
CO
Air quality and pollutant data for Michigan, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Monroe City, Michigan is updated every hour for accuracy.
In the past 24 hours, the air quality in Monroe City, Michigan was at its worst at 08:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Monroe City, Michigan was observed at 04:00:00 on 2026-07-23.
As of now, the AQI in Monroe City, Michigan is 40, indicating Good conditions.
Monroe City, Michigan air has the highest levels of O3.
Poor air quality in Monroe City, Michigan means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Monroe City, Michigan are currently 5.836 μg/m3.
The PM10 concentration in Monroe City, Michigan is 22.176 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Monroe City, Michigan is 0.16 ppm.
Currently, Monroe City, Michigan has a sulfur dioxide (SO2) concentration of 1.088 ppb.
The current ozone (O3) level in Monroe City, Michigan at the moment is 43.452 ppm.
Nitrogen dioxide (NO2) level in Monroe City, Michigan at the moment is 4.152 ppb.
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