Stay updated with real-time air quality in Monroe, Connecticut 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)
39
Good
Monroe, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.36 μg/m³
0
55
155
255
425
605+
41.89 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
7.91 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Monroe, Connecticut
Monroe, Connecticut
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AQI 33
Good
6.40μg/m³
PM2.5
30.00μg/m³
PM10
34.23ppb
O3
0.27ppb
SO2
6.80ppb
NO2
0.20ppm
CO
AQI 33
Good
6.40μg/m³
PM2.5
30.00μg/m³
PM10
34.23ppb
O3
0.27ppb
SO2
6.80ppb
NO2
0.20ppm
CO
AQI 39
Good
6.27μg/m³
PM2.5
17.79μg/m³
PM10
41.99ppb
O3
0.30ppb
SO2
5.18ppb
NO2
0.22ppm
CO
AQI 33
Good
6.40μg/m³
PM2.5
30.00μg/m³
PM10
34.23ppb
O3
0.27ppb
SO2
6.80ppb
NO2
0.20ppm
CO
AQI 37
Good
6.27μg/m³
PM2.5
25.32μg/m³
PM10
39.73ppb
O3
0.31ppb
SO2
6.07ppb
NO2
0.23ppm
CO
AQI 33
Good
6.45μg/m³
PM2.5
24.61μg/m³
PM10
34.18ppb
O3
0.27ppb
SO2
5.78ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Connecticut, 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, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Monroe, Connecticut was at its worst at 12:00:00 on 2025-09-13.
In the last 24 hours, the best air quality in Monroe, Connecticut was observed at 04:00:00 on 2025-09-13.
As of now, the AQI in Monroe, Connecticut is 39, indicating Good conditions.
Monroe, Connecticut air has the highest levels of O3.
Poor air quality in Monroe, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Monroe, Connecticut are currently 6.268 μg/m3.
The PM10 concentration in Monroe, Connecticut is 25.357 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Monroe, Connecticut is 0.223 ppm.
Currently, Monroe, Connecticut has a sulfur dioxide (SO2) concentration of 0.303 ppb.
The current ozone (O3) level in Monroe, Connecticut at the moment is 41.893 ppm.
Nitrogen dioxide (NO2) level in Monroe, Connecticut at the moment is 7.906 ppb.
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