Hourly Weather | Today Tuesday, September 1, 2026
West Haven, Connecticut
12 PM
Rainy Weather
73°
Feels Like 77°
57
Humidity: 95%
UV Index: 1
Wind: 8 mph
1 PM
Cloudy Weather
73°
Feels Like 79°
49
Humidity: 92%
UV Index: 2
Wind: 9 mph
2 PM
Cloudy Weather
75°
Feels Like 81°
34
Humidity: 90%
UV Index: 2
Wind: 11 mph
3 PM
Cloudy Weather
75°
Feels Like 81°
34
Humidity: 89%
UV Index: 2
Wind: 11 mph
4 PM
Cloudy Weather
77°
Feels Like 81°
37
Humidity: 87%
UV Index: 1
Wind: 11 mph
5 PM
Cloudy Weather
75°
Feels Like 81°
43
Humidity: 89%
UV Index: 1
Wind: 11 mph
6 PM
Cloudy Weather
75°
Feels Like 79°
47
Humidity: 92%
UV Index: 0
Wind: 9 mph
7 PM
Stormy Weather
73°
Feels Like 72°
51
Humidity: 94%
UV Index: 0
Wind: 8 mph
8 PM
Stormy Weather
72°
Feels Like 68°
71
Humidity: 93%
UV Index: 0
Wind: 12 mph
9 PM
Cloudy Weather
70°
Feels Like 70°
49
Humidity: 97%
UV Index: 0
Wind: 12 mph
10 PM
Stormy Weather
68°
Feels Like 64°
71
Humidity: 98%
UV Index: 0
Wind: 11 mph
11 PM
Cloudy Weather
66°
Feels Like 66°
40
Humidity: 99%
UV Index: 0
Wind: 11 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 10.73 µg/m³
  • PM10: 12.68 µg/m³
  • O3: 0.032 ppm
  • NO2: 3.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.21 µg/m³
  • PM10: 13.02 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.9 µg/m³
  • PM10: 13.64 µg/m³
  • O3: 0.039 ppm
  • NO2: 3 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.59 µg/m³
  • PM10: 14.29 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.01 µg/m³
  • PM10: 14.65 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.04 µg/m³
  • PM10: 14.67 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.75 µg/m³
  • PM10: 14.3 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.37 µg/m³
  • PM10: 13.71 µg/m³
  • O3: 0.045 ppm
  • NO2: 4 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.55 µg/m³
  • PM10: 13.84 µg/m³
  • O3: 0.041 ppm
  • NO2: 5.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.02 µg/m³
  • PM10: 15.73 µg/m³
  • O3: 0.035 ppm
  • NO2: 8.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.49 µg/m³
  • PM10: 18.05 µg/m³
  • O3: 0.029 ppm
  • NO2: 13.1 ppb
  • SO2: 1.6 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.71 µg/m³
  • PM10: 19.02 µg/m³
  • O3: 0.022 ppm
  • NO2: 17.2 ppb
  • SO2: 1.9 ppb
  • CO: 0.26 ppm

Health Recommendations:

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