Hourly Weather | Today Wednesday, August 12, 2026
Bristol, Connecticut
9 AM
Cloudy Weather
68°
Feels Like 72°
0
Humidity: 79%
UV Index: 3
Wind: 6 mph
10 AM
Cloudy Weather
72°
Feels Like 77°
0
Humidity: 70%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
77°
Feels Like 82°
0
Humidity: 60%
UV Index: 6
Wind: 7 mph
12 PM
Cloudy Weather
81°
Feels Like 88°
0
Humidity: 51%
UV Index: 8
Wind: 7 mph
1 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 47%
UV Index: 8
Wind: 7 mph
2 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 45%
UV Index: 8
Wind: 7 mph
3 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 43%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
84°
Feels Like 88°
0
Humidity: 42%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
84°
Feels Like 86°
0
Humidity: 44%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 48%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 54%
UV Index: 1
Wind: 5 mph
8 PM
Cloudy Night
77°
Feels Like 77°
19
Humidity: 62%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
73°
Feels Like 73°
19
Humidity: 70%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
72°
Feels Like 72°
24
Humidity: 76%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
70°
Feels Like 70°
43
Humidity: 82%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.35 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.015 ppm
  • NO2: 9.7 ppb
  • SO2: 2.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
20 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.71 µg/m³
  • PM10: 7.12 µg/m³
  • O3: 0.021 ppm
  • NO2: 9.5 ppb
  • SO2: 2.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.7 µg/m³
  • PM10: 8.16 µg/m³
  • O3: 0.030 ppm
  • NO2: 9.5 ppb
  • SO2: 3 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.81 µg/m³
  • PM10: 7.45 µg/m³
  • O3: 0.044 ppm
  • NO2: 6.1 ppb
  • SO2: 2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.7 µg/m³
  • PM10: 9.06 µg/m³
  • O3: 0.053 ppm
  • NO2: 4.2 ppb
  • SO2: 1.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.41 µg/m³
  • PM10: 11.74 µg/m³
  • O3: 0.061 ppm
  • NO2: 3.3 ppb
  • SO2: 1.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
81 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.46 µg/m³
  • PM10: 12.76 µg/m³
  • O3: 0.064 ppm
  • NO2: 3.6 ppb
  • SO2: 1.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
72 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.73 µg/m³
  • PM10: 11.97 µg/m³
  • O3: 0.061 ppm
  • NO2: 4.4 ppb
  • SO2: 1.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
61 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.66 µg/m³
  • PM10: 10.83 µg/m³
  • O3: 0.058 ppm
  • NO2: 5.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.68 µg/m³
  • PM10: 9.83 µg/m³
  • O3: 0.054 ppm
  • NO2: 5.9 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.96 µg/m³
  • PM10: 9.22 µg/m³
  • O3: 0.051 ppm
  • NO2: 6.3 ppb
  • SO2: 1.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.3 µg/m³
  • PM10: 8.66 µg/m³
  • O3: 0.049 ppm
  • NO2: 5.9 ppb
  • SO2: 1.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 8.68 µg/m³
  • O3: 0.046 ppm
  • NO2: 6.9 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.03 µg/m³
  • PM10: 9.17 µg/m³
  • O3: 0.040 ppm
  • NO2: 9.1 ppb
  • SO2: 1.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.82 µg/m³
  • PM10: 9.25 µg/m³
  • O3: 0.034 ppm
  • NO2: 11 ppb
  • SO2: 1.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.