Hourly Weather | Today › Monday, November 2, 2026
Norwalk, Connecticut
1 AM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 77%
UV Index: 0
Wind: 6 mph
2 AM
Night
48°
Feels Like 46°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph
3 AM
Night
48°
Feels Like 46°
0
Humidity: 80%
UV Index: 0
Wind: 6 mph
4 AM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 82%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 83%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
46°
Feels Like 45°
0
Humidity: 89%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
48°
Feels Like 45°
0
Humidity: 85%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
52°
Feels Like 50°
0
Humidity: 79%
UV Index: 1
Wind: 6 mph
9 AM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 69%
UV Index: 2
Wind: 7 mph
10 AM
Cloudy Weather
59°
Feels Like 61°
0
Humidity: 63%
UV Index: 2
Wind: 7 mph
11 AM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 58%
UV Index: 3
Wind: 7 mph
12 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 52%
UV Index: 3
Wind: 8 mph
1 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 48%
UV Index: 3
Wind: 8 mph
2 PM
Cloudy Weather
68°
Feels Like 68°
0
Humidity: 47%
UV Index: 2
Wind: 8 mph
3 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 50%
UV Index: 2
Wind: 7 mph
4 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 54%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 62%
UV Index: 0
Wind: 7 mph
6 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 71%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph
8 PM
Night
55°
Feels Like 54°
0
Humidity: 83%
UV Index: 0
Wind: 6 mph
9 PM
Night
55°
Feels Like 54°
0
Humidity: 87%
UV Index: 0
Wind: 6 mph
10 PM
Night
54°
Feels Like 52°
0
Humidity: 92%
UV Index: 0
Wind: 6 mph
11 PM
Night
54°
Feels Like 52°
0
Humidity: 95%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 9.42 µg/m³
  • PM10: 13.2 µg/m³
  • O3: 0.022 ppm
  • NO2: 12.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.96 µg/m³
  • PM10: 13.89 µg/m³
  • O3: 0.020 ppm
  • NO2: 12.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.58 µg/m³
  • PM10: 14.67 µg/m³
  • O3: 0.018 ppm
  • NO2: 13.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.1 µg/m³
  • PM10: 15.33 µg/m³
  • O3: 0.016 ppm
  • NO2: 13.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.66 µg/m³
  • PM10: 16.02 µg/m³
  • O3: 0.015 ppm
  • NO2: 14.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.22 µg/m³
  • PM10: 16.71 µg/m³
  • O3: 0.014 ppm
  • NO2: 14.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.11 µg/m³
  • PM10: 17.93 µg/m³
  • O3: 0.012 ppm
  • NO2: 16 ppb
  • SO2: 0.8 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

8 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.83 µg/m³
  • PM10: 19 µg/m³
  • O3: 0.012 ppm
  • NO2: 16.3 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 14.01 µg/m³
  • PM10: 19.37 µg/m³
  • O3: 0.015 ppm
  • NO2: 14 ppb
  • SO2: 0.9 ppb
  • CO: 0.32 ppm

Health Recommendations:

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

10 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14 µg/m³
  • PM10: 19.37 µg/m³
  • O3: 0.019 ppm
  • NO2: 12.6 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.

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

Pollutant Concentrations:

  • PM2.5: 10.86 µg/m³
  • PM10: 14.93 µg/m³
  • O3: 0.034 ppm
  • NO2: 9.4 ppb
  • SO2: 2 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.22 µg/m³
  • PM10: 13.86 µg/m³
  • O3: 0.040 ppm
  • NO2: 7.9 ppb
  • SO2: 1.9 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.15 µg/m³
  • PM10: 13.47 µg/m³
  • O3: 0.044 ppm
  • NO2: 6.9 ppb
  • SO2: 1.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.13 µg/m³
  • PM10: 11.91 µg/m³
  • O3: 0.048 ppm
  • NO2: 5.1 ppb
  • SO2: 1.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

3 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.71 µg/m³
  • PM10: 11.28 µg/m³
  • O3: 0.049 ppm
  • NO2: 4.6 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.22 µg/m³
  • PM10: 10.68 µg/m³
  • O3: 0.048 ppm
  • NO2: 4.9 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.79 µg/m³
  • PM10: 10.2 µg/m³
  • O3: 0.046 ppm
  • NO2: 5.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

6 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.65 µg/m³
  • PM10: 10.09 µg/m³
  • O3: 0.042 ppm
  • NO2: 6.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.46 µg/m³
  • PM10: 9.96 µg/m³
  • O3: 0.040 ppm
  • NO2: 7 ppb
  • SO2: 0.7 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 9.5 µg/m³
  • O3: 0.037 ppm
  • NO2: 6.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.58 µg/m³
  • PM10: 9.08 µg/m³
  • O3: 0.036 ppm
  • NO2: 6.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.23 µg/m³
  • PM10: 8.77 µg/m³
  • O3: 0.035 ppm
  • NO2: 6.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 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: 5.84 µg/m³
  • PM10: 8.36 µg/m³
  • O3: 0.034 ppm
  • NO2: 6.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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