Hourly Weather | Today Monday, September 22, 2025
Hartford, Connecticut
2 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
3 AM
Cloudy Night
43°
Feels Like 45°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
4 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
5 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
6 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
7 AM
Cloudy Weather
46°
Feels Like 46°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
8 AM
Cloudy Weather
46°
Feels Like 48°
0
Humidity: 100%
Wind: 4 mph
UV Index: 2
9 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 94%
Wind: 4 mph
UV Index: 9
10 AM
Cloudy Weather
57°
Feels Like 63°
0
Humidity: 82%
Wind: 5 mph
UV Index: 27
11 AM
Sunny Weather
63°
Feels Like 70°
0
Humidity: 71%
Wind: 5 mph
UV Index: 37
12 PM
Sunny Weather
66°
Feels Like 72°
0
Humidity: 64%
Wind: 6 mph
UV Index: 44
1 PM
Sunny Weather
68°
Feels Like 73°
0
Humidity: 59%
Wind: 7 mph
UV Index: 47
2 PM
Sunny Weather
72°
Feels Like 75°
0
Humidity: 53%
Wind: 7 mph
UV Index: 44
3 PM
Sunny Weather
73°
Feels Like 75°
0
Humidity: 49%
Wind: 7 mph
UV Index: 37
4 PM
Sunny Weather
75°
Feels Like 75°
0
Humidity: 47%
Wind: 8 mph
UV Index: 27
5 PM
Sunny Weather
72°
Feels Like 72°
0
Humidity: 52%
Wind: 8 mph
UV Index: 18
6 PM
Sunny Weather
70°
Feels Like 70°
0
Humidity: 58%
Wind: 8 mph
UV Index: 9
7 PM
Night
66°
Feels Like 64°
0
Humidity: 68%
Wind: 7 mph
UV Index: 0
8 PM
Night
64°
Feels Like 63°
0
Humidity: 80%
Wind: 7 mph
UV Index: 0
9 PM
Night
61°
Feels Like 61°
0
Humidity: 89%
Wind: 6 mph
UV Index: 0
10 PM
Night
61°
Feels Like 57°
0
Humidity: 93%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 94%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.81 µg/m³
  • PM10: 13.11 µg/m³
  • O₃: 21.10 ppb
  • NO₂: 19.61 ppb
  • SO₂: 0.33 ppb
  • CO: 486.72 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

3 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.05 µg/m³
  • PM10: 12.97 µg/m³
  • O₃: 19.81 ppb
  • NO₂: 18.17 ppb
  • SO₂: 0.45 ppb
  • CO: 428.29 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.25 µg/m³
  • PM10: 12.78 µg/m³
  • O₃: 18.28 ppb
  • NO₂: 16.51 ppb
  • SO₂: 0.57 ppb
  • CO: 368.63 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.53 µg/m³
  • PM10: 12.94 µg/m³
  • O₃: 17.17 ppb
  • NO₂: 15.35 ppb
  • SO₂: 0.61 ppb
  • CO: 336.97 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

6 AM
40 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.45 µg/m³
  • PM10: 13.99 µg/m³
  • O₃: 16.25 ppb
  • NO₂: 14.56 ppb
  • SO₂: 0.58 ppb
  • CO: 334.50 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

7 AM
41 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.98 µg/m³
  • PM10: 15.66 µg/m³
  • O₃: 15.41 ppb
  • NO₂: 13.88 ppb
  • SO₂: 0.53 ppb
  • CO: 339.13 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 AM
43 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.27 µg/m³
  • PM10: 15.86 µg/m³
  • O₃: 13.24 ppb
  • NO₂: 11.84 ppb
  • SO₂: 0.54 ppb
  • CO: 305.80 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

9 AM
44 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.64 µg/m³
  • PM10: 13.61 µg/m³
  • O₃: 22.56 ppb
  • NO₂: 8.62 ppb
  • SO₂: 0.60 ppb
  • CO: 253.04 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

10 AM
45 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.86 µg/m³
  • PM10: 11.86 µg/m³
  • O₃: 31.88 ppb
  • NO₂: 5.39 ppb
  • SO₂: 0.66 ppb
  • CO: 200.27 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

11 AM
45 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.04 µg/m³
  • PM10: 11.14 µg/m³
  • O₃: 41.20 ppb
  • NO₂: 2.17 ppb
  • SO₂: 0.72 ppb
  • CO: 147.51 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

12 PM
46 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.20 µg/m³
  • PM10: 11.39 µg/m³
  • O₃: 45.94 ppb
  • NO₂: 1.84 ppb
  • SO₂: 0.69 ppb
  • CO: 147.05 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

1 PM
47 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.76 µg/m³
  • PM10: 12.06 µg/m³
  • O₃: 50.68 ppb
  • NO₂: 1.52 ppb
  • SO₂: 0.65 ppb
  • CO: 146.59 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

2 PM
47 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.14 µg/m³
  • PM10: 12.44 µg/m³
  • O₃: 55.42 ppb
  • NO₂: 1.19 ppb
  • SO₂: 0.61 ppb
  • CO: 146.13 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

3 PM
48 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.06 µg/m³
  • PM10: 12.12 µg/m³
  • O₃: 56.27 ppb
  • NO₂: 1.47 ppb
  • SO₂: 0.63 ppb
  • CO: 148.61 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 PM
50 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.83 µg/m³
  • PM10: 11.59 µg/m³
  • O₃: 57.12 ppb
  • NO₂: 1.75 ppb
  • SO₂: 0.65 ppb
  • CO: 151.10 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.63 µg/m³
  • PM10: 11.13 µg/m³
  • O₃: 57.98 ppb
  • NO₂: 2.02 ppb
  • SO₂: 0.67 ppb
  • CO: 153.58 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.42 µg/m³
  • PM10: 10.51 µg/m³
  • O₃: 51.51 ppb
  • NO₂: 4.08 ppb
  • SO₂: 0.70 ppb
  • CO: 166.69 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.65 µg/m³
  • PM10: 10.50 µg/m³
  • O₃: 45.05 ppb
  • NO₂: 6.13 ppb
  • SO₂: 0.73 ppb
  • CO: 179.81 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.49 µg/m³
  • PM10: 10.43 µg/m³
  • O₃: 38.59 ppb
  • NO₂: 8.18 ppb
  • SO₂: 0.76 ppb
  • CO: 192.92 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
52 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.45 µg/m³
  • PM10: 10.38 µg/m³
  • O₃: 36.02 ppb
  • NO₂: 8.55 ppb
  • SO₂: 0.95 ppb
  • CO: 192.11 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.52 µg/m³
  • PM10: 10.37 µg/m³
  • O₃: 33.45 ppb
  • NO₂: 8.91 ppb
  • SO₂: 1.14 ppb
  • CO: 191.29 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.67 µg/m³
  • PM10: 10.34 µg/m³
  • O₃: 30.87 ppb
  • NO₂: 9.28 ppb
  • SO₂: 1.33 ppb
  • CO: 190.48 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.