Stay updated with real-time air quality in Bristol, 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
Bristol, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.48 μg/m³
0
55
155
255
425
605+
37.96 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
6.92 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Bristol, Connecticut
Bristol, Connecticut
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AQI 41
Good
4.27μg/m³
PM2.5
10.36μg/m³
PM10
44.01ppb
O3
0.19ppb
SO2
3.54ppb
NO2
0.21ppm
CO
AQI 41
Good
4.01μg/m³
PM2.5
10.37μg/m³
PM10
43.91ppb
O3
0.20ppb
SO2
7.05ppb
NO2
0.20ppm
CO
AQI 40
Good
4.48μg/m³
PM2.5
15.08μg/m³
PM10
43.33ppb
O3
0.19ppb
SO2
6.73ppb
NO2
0.20ppm
CO
AQI 41
Good
4.20μg/m³
PM2.5
12.41μg/m³
PM10
43.98ppb
O3
0.20ppb
SO2
10.15ppb
NO2
0.21ppm
CO
AQI 41
Good
4.37μg/m³
PM2.5
16.08μg/m³
PM10
43.85ppb
O3
0.19ppb
SO2
11.82ppb
NO2
0.22ppm
CO
AQI 41
Good
4.67μg/m³
PM2.5
17.25μg/m³
PM10
44.11ppb
O3
0.18ppb
SO2
3.95ppb
NO2
0.22ppm
CO
Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Bristol, Connecticut is updated every hour.
The worst air quality in Bristol, Connecticut in the last 24 hours was observed at 10:00:00 on 2025-09-11.
In the last 24 hrs, the best air quality in Bristol, Connecticut was observed at 03:00:00 on 2025-09-11.
The current air quality in Bristol, Connecticut is 41, categorized as Good based on real-time data.
The most common pollutant in Bristol, Connecticut is O3.
If the air quality in Bristol, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Bristol, Connecticut is 4.231 μg/m3.
The current PM10 concentration at Bristol, Connecticut is 10.249 μg/m3.
The current carbon monoxide (CO) concentration at Bristol, Connecticut is 0.207 ppm.
The current sulfur dioxide (SO2) concentration at Bristol, Connecticut is 0.191 ppb.
The current ozone (O3) concentration at Bristol, Connecticut is 44.079 ppm.
The current nitrogen dioxide (NO2) concentration at Bristol, Connecticut is 3.919 ppb.
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