Stay updated with real-time air quality in Simsbury, 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)
27
Good
Simsbury, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.34 μg/m³
0
55
155
255
425
605+
26.48 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
5.93 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Simsbury, Connecticut
Simsbury, Connecticut
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AQI 27
Good
4.77μg/m³
PM2.5
12.10μg/m³
PM10
27.50ppb
O3
0.23ppb
SO2
7.41ppb
NO2
0.31ppm
CO
AQI 27
Good
5.42μg/m³
PM2.5
14.44μg/m³
PM10
26.79ppb
O3
0.22ppb
SO2
8.92ppb
NO2
0.37ppm
CO
AQI 27
Good
4.84μg/m³
PM2.5
13.19μg/m³
PM10
24.60ppb
O3
0.20ppb
SO2
6.22ppb
NO2
0.26ppm
CO
AQI 27
Good
4.82μg/m³
PM2.5
12.51μg/m³
PM10
23.98ppb
O3
0.17ppb
SO2
5.55ppb
NO2
0.27ppm
CO
AQI 27
Good
5.48μg/m³
PM2.5
14.95μg/m³
PM10
26.68ppb
O3
0.23ppb
SO2
9.54ppb
NO2
0.37ppm
CO
AQI 27
Good
5.24μg/m³
PM2.5
12.87μg/m³
PM10
26.88ppb
O3
0.22ppb
SO2
6.31ppb
NO2
0.36ppm
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 Simsbury, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Simsbury, Connecticut was at its worst at 11:00:00 on 2025-07-13.
In the last 24 hours, the best air quality in Simsbury, Connecticut was observed at 09:00:00 on 2025-07-14.
As of now, the AQI in Simsbury, Connecticut is 27, indicating Good conditions.
Simsbury, Connecticut air has the highest levels of PM2.5.
Poor air quality in Simsbury, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Simsbury, Connecticut are currently 4.725 μg/m3.
The PM10 concentration in Simsbury, Connecticut is 13.341 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Simsbury, Connecticut is 0.28 ppm.
Currently, Simsbury, Connecticut has a sulfur dioxide (SO2) concentration of 0.189 ppb.
The current ozone (O3) level in Simsbury, Connecticut at the moment is 26.476 ppm.
Nitrogen dioxide (NO2) level in Simsbury, Connecticut at the moment is 5.929 ppb.
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