Hourly Weather | Today Saturday, December 13, 2025
Hartford, Connecticut
1 AM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 63%
Wind: 6 mph
UV Index: 0
2 AM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 64%
Wind: 6 mph
UV Index: 0
3 AM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
4 AM
Cloudy Night
25°
Feels Like 21°
0
Humidity: 68%
Wind: 6 mph
UV Index: 0
5 AM
Cloudy Night
23°
Feels Like 19°
0
Humidity: 74%
Wind: 6 mph
UV Index: 0
6 AM
Cloudy Night
25°
Feels Like 21°
0
Humidity: 71%
Wind: 6 mph
UV Index: 0
7 AM
Cloudy Night
25°
Feels Like 21°
0
Humidity: 69%
Wind: 6 mph
UV Index: 0
8 AM
Cloudy Weather
27°
Feels Like 23°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
9 AM
Cloudy Weather
28°
Feels Like 23°
0
Humidity: 63%
Wind: 7 mph
UV Index: 0
10 AM
Cloudy Weather
30°
Feels Like 25°
0
Humidity: 60%
Wind: 8 mph
UV Index: 0
11 AM
Cloudy Weather
34°
Feels Like 27°
0
Humidity: 57%
Wind: 8 mph
UV Index: 1
12 PM
Cloudy Weather
36°
Feels Like 28°
0
Humidity: 56%
Wind: 9 mph
UV Index: 1
1 PM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 58%
Wind: 9 mph
UV Index: 1
2 PM
Cloudy Weather
37°
Feels Like 30°
0
Humidity: 58%
Wind: 9 mph
UV Index: 1
3 PM
Cloudy Weather
37°
Feels Like 30°
0
Humidity: 62%
Wind: 8 mph
UV Index: 0
4 PM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 68%
Wind: 8 mph
UV Index: 0
5 PM
Cloudy Weather
36°
Feels Like 28°
0
Humidity: 70%
Wind: 7 mph
UV Index: 0
6 PM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 71%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Weather
34°
Feels Like 28°
23
Humidity: 72%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Weather
34°
Feels Like 28°
23
Humidity: 73%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Weather
34°
Feels Like 28°
28
Humidity: 74%
Wind: 7 mph
UV Index: 0
10 PM
Snowy Weather
34°
Feels Like 27°
63
Humidity: 76%
Wind: 7 mph
UV Index: 0
11 PM
Snowy Weather
34°
Feels Like 27°
64
Humidity: 77%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.73 µg/m³
  • PM10: 16.93 µg/m³
  • O3: 0.014 ppm
  • NO2: 24.8 ppb
  • SO2: 3.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

2 AM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.73 µg/m³
  • PM10: 16.87 µg/m³
  • O3: 0.013 ppm
  • NO2: 24.2 ppb
  • SO2: 3.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

3 AM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.78 µg/m³
  • PM10: 16.89 µg/m³
  • O3: 0.013 ppm
  • NO2: 23.8 ppb
  • SO2: 3.2 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

4 AM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.83 µg/m³
  • PM10: 16.93 µg/m³
  • O3: 0.014 ppm
  • NO2: 23.4 ppb
  • SO2: 3.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.77 µg/m³
  • PM10: 16.75 µg/m³
  • O3: 0.014 ppm
  • NO2: 22.7 ppb
  • SO2: 3.3 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

6 AM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.65 µg/m³
  • PM10: 16.48 µg/m³
  • O3: 0.015 ppm
  • NO2: 21.6 ppb
  • SO2: 3.2 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

7 AM
43 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.25 µg/m³
  • PM10: 17.29 µg/m³
  • O3: 0.015 ppm
  • NO2: 21.4 ppb
  • SO2: 3.1 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

8 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11 µg/m³
  • PM10: 18.29 µg/m³
  • O3: 0.015 ppm
  • NO2: 21.2 ppb
  • SO2: 2.9 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.08 µg/m³
  • PM10: 18.14 µg/m³
  • O3: 0.017 ppm
  • NO2: 19.1 ppb
  • SO2: 2.7 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.38 µg/m³
  • PM10: 16.69 µg/m³
  • O3: 0.020 ppm
  • NO2: 15.2 ppb
  • SO2: 2.3 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

11 AM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.1 µg/m³
  • PM10: 12.25 µg/m³
  • O3: 0.027 ppm
  • NO2: 8.9 ppb
  • SO2: 1.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

12 PM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.12 µg/m³
  • PM10: 10.51 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.9 ppb
  • SO2: 1.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

1 PM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.85 µg/m³
  • PM10: 10.05 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.7 ppb
  • SO2: 1.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

2 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.58 µg/m³
  • PM10: 11.09 µg/m³
  • O3: 0.029 ppm
  • NO2: 8 ppb
  • SO2: 1.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

3 PM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.85 µg/m³
  • PM10: 13.06 µg/m³
  • O3: 0.026 ppm
  • NO2: 10.8 ppb
  • SO2: 1.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

4 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.97 µg/m³
  • PM10: 14.82 µg/m³
  • O3: 0.022 ppm
  • NO2: 13.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

5 PM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.07 µg/m³
  • PM10: 16.62 µg/m³
  • O3: 0.019 ppm
  • NO2: 16.5 ppb
  • SO2: 1.9 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

6 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.26 µg/m³
  • PM10: 18.57 µg/m³
  • O3: 0.015 ppm
  • NO2: 19.2 ppb
  • SO2: 1.9 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

7 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.38 µg/m³
  • PM10: 20.45 µg/m³
  • O3: 0.013 ppm
  • NO2: 21 ppb
  • SO2: 1.8 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

8 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.17 µg/m³
  • PM10: 20.93 µg/m³
  • O3: 0.012 ppm
  • NO2: 21.8 ppb
  • SO2: 1.7 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

9 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.52 µg/m³
  • PM10: 20.36 µg/m³
  • O3: 0.011 ppm
  • NO2: 22.1 ppb
  • SO2: 1.6 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

10 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.71 µg/m³
  • PM10: 19.97 µg/m³
  • O3: 0.010 ppm
  • NO2: 22.2 ppb
  • SO2: 1.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

11 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.38 µg/m³
  • PM10: 19.15 µg/m³
  • O3: 0.010 ppm
  • NO2: 22.1 ppb
  • SO2: 1.2 ppb
  • CO: 0.31 ppm

Health Recommendations:

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