Hourly Weather | Today Wednesday, February 4, 2026
Norwalk, California
5 PM
Sunny Weather
86°
Feels Like 84°
0
Humidity: 14%
UV Index: 0
Wind: 6 mph
6 PM
Night
82°
Feels Like 79°
0
Humidity: 16%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 19%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 22%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 24%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 26%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 27%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 PM
123 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 44.65 µg/m³
  • PM10: 55.42 µg/m³
  • O3: 0.073 ppm
  • NO2: 14.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.38 ppm

Health Recommendations:

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

6 PM
109 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 38.9 µg/m³
  • PM10: 48.96 µg/m³
  • O3: 0.070 ppm
  • NO2: 11.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.34 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 34.12 µg/m³
  • PM10: 43.61 µg/m³
  • O3: 0.066 ppm
  • NO2: 7.5 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 30.87 µg/m³
  • PM10: 39.98 µg/m³
  • O3: 0.064 ppm
  • NO2: 5 ppb
  • SO2: 0.8 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
86 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.65 µg/m³
  • PM10: 37.28 µg/m³
  • O3: 0.061 ppm
  • NO2: 3.6 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 27.23 µg/m³
  • PM10: 35.56 µg/m³
  • O3: 0.057 ppm
  • NO2: 3.1 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 26.49 µg/m³
  • PM10: 34.93 µg/m³
  • O3: 0.052 ppm
  • NO2: 3.3 ppb
  • SO2: 0.5 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.