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)
56
Moderate
Bristol, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.05 μg/m³
0
55
155
255
425
605+
22.12 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
8.64 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Bristol, Connecticut
Bristol, Connecticut
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AQI 56
Moderate
12.08μg/m³
PM2.5
27.94μg/m³
PM10
22.30ppb
O3
0.48ppb
SO2
8.42ppb
NO2
0.18ppm
CO
AQI 56
Moderate
11.62μg/m³
PM2.5
22.12μg/m³
PM10
22.01ppb
O3
0.56ppb
SO2
10.24ppb
NO2
0.23ppm
CO
AQI 54
Moderate
10.52μg/m³
PM2.5
35.83μg/m³
PM10
24.19ppb
O3
0.45ppb
SO2
9.41ppb
NO2
0.23ppm
CO
AQI 56
Moderate
12.06μg/m³
PM2.5
27.02μg/m³
PM10
22.20ppb
O3
0.48ppb
SO2
8.48ppb
NO2
0.18ppm
CO
AQI 56
Moderate
12.30μg/m³
PM2.5
33.63μg/m³
PM10
24.50ppb
O3
0.48ppb
SO2
7.42ppb
NO2
0.16ppm
CO
AQI 56
Moderate
12.24μg/m³
PM2.5
32.31μg/m³
PM10
21.48ppb
O3
0.47ppb
SO2
8.27ppb
NO2
0.17ppm
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 09:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in Bristol, Connecticut was observed at 09:00:00 on 2025-06-07.
The current air quality in Bristol, Connecticut is 56, categorized as Moderate based on real-time data.
The most common pollutant in Bristol, Connecticut is PM2.5.
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 11.618 μg/m3.
The current PM10 concentration at Bristol, Connecticut is 27.051 μg/m3.
The current carbon monoxide (CO) concentration at Bristol, Connecticut is 0.217 ppm.
The current sulfur dioxide (SO2) concentration at Bristol, Connecticut is 0.45 ppb.
The current ozone (O3) concentration at Bristol, Connecticut is 22.12 ppm.
The current nitrogen dioxide (NO2) concentration at Bristol, Connecticut is 8.641 ppb.
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