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)
49
Good
Bristol, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.49 μg/m³
0
55
155
255
425
605+
27.92 ppb
0
55
71
86
201
201+
1.26 ppb
0
36
76
186
605
1005+
9.69 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Bristol, Connecticut
Bristol, Connecticut
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AQI 44
Good
8.04μg/m³
PM2.5
16.66μg/m³
PM10
34.75ppb
O3
1.60ppb
SO2
4.74ppb
NO2
0.25ppm
CO
AQI 44
Good
7.62μg/m³
PM2.5
16.74μg/m³
PM10
31.52ppb
O3
1.74ppb
SO2
5.65ppb
NO2
0.24ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
18.01μg/m³
PM10
32.87ppb
O3
1.75ppb
SO2
5.46ppb
NO2
0.24ppm
CO
AQI 44
Good
8.04μg/m³
PM2.5
20.49μg/m³
PM10
34.71ppb
O3
1.62ppb
SO2
4.61ppb
NO2
0.24ppm
CO
AQI 44
Good
8.06μg/m³
PM2.5
18.84μg/m³
PM10
34.35ppb
O3
1.58ppb
SO2
4.74ppb
NO2
0.26ppm
CO
AQI 44
Good
7.82μg/m³
PM2.5
20.33μg/m³
PM10
32.67ppb
O3
1.54ppb
SO2
5.76ppb
NO2
0.25ppm
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 2025-07-16.
In the last 24 hrs, the best air quality in Bristol, Connecticut was observed at 08:00:00 on 2025-07-16.
The current air quality in Bristol, Connecticut is 44, categorized as Good 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 7.906 μg/m3.
The current PM10 concentration at Bristol, Connecticut is 21.898 μg/m3.
The current carbon monoxide (CO) concentration at Bristol, Connecticut is 0.213 ppm.
The current sulfur dioxide (SO2) concentration at Bristol, Connecticut is 1.745 ppb.
The current ozone (O3) concentration at Bristol, Connecticut is 33.346 ppm.
The current nitrogen dioxide (NO2) concentration at Bristol, Connecticut is 5.86 ppb.
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