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)
38
Good
Simsbury, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.35 μg/m³
0
55
155
255
425
605+
40.27 ppb
0
55
71
86
201
201+
0.25 ppb
0
36
76
186
605
1005+
9.45 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Simsbury, Connecticut
Simsbury, Connecticut
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AQI 44
Good
7.50μg/m³
PM2.5
18.11μg/m³
PM10
39.05ppb
O3
0.24ppb
SO2
7.63ppb
NO2
0.32ppm
CO
AQI 38
Good
7.40μg/m³
PM2.5
16.78μg/m³
PM10
35.43ppb
O3
0.26ppb
SO2
10.16ppb
NO2
0.37ppm
CO
AQI 38
Good
7.34μg/m³
PM2.5
16.78μg/m³
PM10
39.53ppb
O3
0.24ppb
SO2
8.07ppb
NO2
0.26ppm
CO
AQI 38
Good
6.84μg/m³
PM2.5
24.36μg/m³
PM10
38.03ppb
O3
0.25ppb
SO2
8.62ppb
NO2
0.27ppm
CO
AQI 38
Good
7.41μg/m³
PM2.5
16.78μg/m³
PM10
35.60ppb
O3
0.26ppb
SO2
10.80ppb
NO2
0.37ppm
CO
AQI 38
Good
7.33μg/m³
PM2.5
16.05μg/m³
PM10
35.33ppb
O3
0.27ppb
SO2
7.63ppb
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 10:00:00 on 2025-09-13.
In the last 24 hours, the best air quality in Simsbury, Connecticut was observed at 01:00:00 on 2025-09-14.
As of now, the AQI in Simsbury, Connecticut is 38, 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 7.374 μg/m3.
The PM10 concentration in Simsbury, Connecticut is 16.35 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Simsbury, Connecticut is 0.276 ppm.
Currently, Simsbury, Connecticut has a sulfur dioxide (SO2) concentration of 0.247 ppb.
The current ozone (O3) level in Simsbury, Connecticut at the moment is 40.27 ppm.
Nitrogen dioxide (NO2) level in Simsbury, Connecticut at the moment is 9.445 ppb.
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