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)
22
Good
Bristol, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.53 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.67 μg/m³
0
55
155
255
425
605+
24.49 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
5.51 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Bristol, Connecticut
Bristol, Connecticut
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AQI 30
Good
2.33μg/m³
PM2.5
8.57μg/m³
PM10
31.75ppb
O3
0.20ppb
SO2
6.52ppb
NO2
0.19ppm
CO
AQI 24
Good
2.55μg/m³
PM2.5
4.97μg/m³
PM10
26.18ppb
O3
0.20ppb
SO2
6.32ppb
NO2
0.20ppm
CO
AQI 30
Good
2.42μg/m³
PM2.5
8.38μg/m³
PM10
31.79ppb
O3
0.19ppb
SO2
5.59ppb
NO2
0.18ppm
CO
AQI 29
Good
2.33μg/m³
PM2.5
5.74μg/m³
PM10
31.50ppb
O3
0.20ppb
SO2
6.67ppb
NO2
0.20ppm
CO
AQI 30
Good
2.37μg/m³
PM2.5
6.80μg/m³
PM10
31.75ppb
O3
0.21ppb
SO2
7.89ppb
NO2
0.19ppm
CO
AQI 30
Good
2.04μg/m³
PM2.5
5.53μg/m³
PM10
31.78ppb
O3
0.20ppb
SO2
6.53ppb
NO2
0.19ppm
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 11:00:00 on 2025-11-14.
In the last 24 hrs, the best air quality in Bristol, Connecticut was observed at 12:00:00 on 2025-11-14.
The current air quality in Bristol, Connecticut is 27, 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 2.192 μg/m3.
The current PM10 concentration at Bristol, Connecticut is 8.63 μg/m3.
The current carbon monoxide (CO) concentration at Bristol, Connecticut is 0.276 ppm.
The current sulfur dioxide (SO2) concentration at Bristol, Connecticut is 0.158 ppb.
The current ozone (O3) concentration at Bristol, Connecticut is 28.54 ppm.
The current nitrogen dioxide (NO2) concentration at Bristol, Connecticut is 10.112 ppb.
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