Hourly Weather | Today Wednesday, August 12, 2026
West Haven, Connecticut
9 AM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 67%
UV Index: 3
Wind: 7 mph
10 AM
Cloudy Weather
77°
Feels Like 81°
0
Humidity: 62%
UV Index: 4
Wind: 7 mph
11 AM
Cloudy Weather
79°
Feels Like 86°
0
Humidity: 57%
UV Index: 6
Wind: 7 mph
12 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 54%
UV Index: 8
Wind: 7 mph
1 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 50%
UV Index: 8
Wind: 7 mph
2 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 48%
UV Index: 8
Wind: 7 mph
3 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 46%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
86°
Feels Like 90°
0
Humidity: 44%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
84°
Feels Like 86°
0
Humidity: 46%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 49%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 54%
UV Index: 1
Wind: 6 mph
8 PM
Stormy Weather
79°
Feels Like 75°
51
Humidity: 65%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
75°
Feels Like 77°
47
Humidity: 74%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
72°
Feels Like 73°
35
Humidity: 81%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
70°
Feels Like 70°
19
Humidity: 90%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 7.3 µg/m³
  • O3: 0.017 ppm
  • NO2: 10.6 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
22 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.2 µg/m³
  • PM10: 7.88 µg/m³
  • O3: 0.022 ppm
  • NO2: 10.5 ppb
  • SO2: 2.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.3 µg/m³
  • PM10: 8.98 µg/m³
  • O3: 0.031 ppm
  • NO2: 10.2 ppb
  • SO2: 2.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.97 µg/m³
  • PM10: 11.43 µg/m³
  • O3: 0.045 ppm
  • NO2: 8.7 ppb
  • SO2: 2.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

1 PM
69 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 14.02 µg/m³
  • PM10: 16.3 µg/m³
  • O3: 0.060 ppm
  • NO2: 6.3 ppb
  • SO2: 2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

2 PM
120 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 19.88 µg/m³
  • PM10: 22.01 µg/m³
  • O3: 0.076 ppm
  • NO2: 3.9 ppb
  • SO2: 1.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
149 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 22.93 µg/m³
  • PM10: 24.89 µg/m³
  • O3: 0.085 ppm
  • NO2: 2.8 ppb
  • SO2: 1.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
149 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 22.72 µg/m³
  • PM10: 24.48 µg/m³
  • O3: 0.085 ppm
  • NO2: 2.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
139 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 21.04 µg/m³
  • PM10: 22.58 µg/m³
  • O3: 0.082 ppm
  • NO2: 2.9 ppb
  • SO2: 1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
124 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 18.86 µg/m³
  • PM10: 20.3 µg/m³
  • O3: 0.077 ppm
  • NO2: 3.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 16.32 µg/m³
  • PM10: 17.84 µg/m³
  • O3: 0.071 ppm
  • NO2: 3.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
86 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 13.77 µg/m³
  • PM10: 15.52 µg/m³
  • O3: 0.065 ppm
  • NO2: 3 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.45 µg/m³
  • PM10: 13.3 µg/m³
  • O3: 0.059 ppm
  • NO2: 2.7 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 10 µg/m³
  • PM10: 11.94 µg/m³
  • O3: 0.052 ppm
  • NO2: 3 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.64 µg/m³
  • PM10: 10.54 µg/m³
  • O3: 0.044 ppm
  • NO2: 3.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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