Hourly Weather | Today Thursday, July 16, 2026
Active Weather Warnings
Norwalk, California
3 AM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 81%
UV Index: 0
Wind: 5 mph
4 AM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
5 AM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 82%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 76%
UV Index: 1
Wind: 4 mph
8 AM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 71%
UV Index: 0
Wind: 4 mph
9 AM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 62%
UV Index: 2
Wind: 5 mph
10 AM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 56%
UV Index: 5
Wind: 6 mph
11 AM
Sunny Weather
84°
Feels Like 93°
0
Humidity: 50%
UV Index: 8
Wind: 7 mph
12 PM
Sunny Weather
88°
Feels Like 97°
0
Humidity: 47%
UV Index: 10
Wind: 7 mph
1 PM
Sunny Weather
88°
Feels Like 97°
0
Humidity: 45%
UV Index: 11
Wind: 8 mph
2 PM
Sunny Weather
90°
Feels Like 99°
0
Humidity: 42%
UV Index: 10
Wind: 9 mph
3 PM
Sunny Weather
90°
Feels Like 95°
0
Humidity: 43%
UV Index: 8
Wind: 9 mph
4 PM
Sunny Weather
88°
Feels Like 91°
0
Humidity: 44%
UV Index: 5
Wind: 9 mph
5 PM
Sunny Weather
88°
Feels Like 88°
0
Humidity: 46%
UV Index: 3
Wind: 9 mph
6 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 49%
UV Index: 2
Wind: 9 mph
7 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 54%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
79°
Feels Like 77°
0
Humidity: 60%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
75°
Feels Like 75°
0
Humidity: 67%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
73°
Feels Like 73°
0
Humidity: 71%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 74%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.55 µg/m³
  • PM10: 22.71 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

4 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 22.37 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

5 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.45 µg/m³
  • PM10: 22.17 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

6 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.44 µg/m³
  • PM10: 21.87 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.52 µg/m³
  • PM10: 21.81 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.66 µg/m³
  • PM10: 21.77 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.88 µg/m³
  • PM10: 21.85 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.17 µg/m³
  • PM10: 22.1 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.62 µg/m³
  • PM10: 22.54 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.26 µg/m³
  • PM10: 23.33 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9 µg/m³
  • PM10: 24.18 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.07 µg/m³
  • PM10: 25.41 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.83 µg/m³
  • PM10: 27.5 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.38 µg/m³
  • PM10: 29.19 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.29 µg/m³
  • PM10: 30.05 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.44 µg/m³
  • PM10: 29.8 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.43 µg/m³
  • PM10: 27.88 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.94 µg/m³
  • PM10: 25.42 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.69 µg/m³
  • PM10: 23.5 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

10 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.55 µg/m³
  • PM10: 21.98 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.31 µg/m³
  • PM10: 20.53 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Norwalk

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued July 13 at 3:18AM PDT until July 16 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Jul 14, 10:00 AM Jul 16, 8:00 PM
WHAT: For the Heat Advisory, temperatures of 85 to 95 degrees
expected. For the Extreme Heat Watch, dangerously hot conditions
with temperatures of 95 to 105 degrees possible. Warmest
temperatures expected in the valleys.

WHERE: Eastern San Fernando Valley, Los Angeles County Inland
Coast including Downtown Los Angeles, Los Angeles County San
Gabriel Valley, Santa Clarita Valley, Santa Susana Mountains, and
Western San Fernando Valley.

WHEN: For the Heat Advisory, until 10 AM PDT Tuesday. For the
Extreme Heat Watch, from Tuesday morning through Thursday evening.

IMPACTS: There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors.

ADDITIONAL DETAILS: Monsoonal moisture will increase the
potential for heat impacts.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.
Updated: Jul 13, 7:17 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued July 16 at 12:12AM PDT until July 16 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Jul 16, 12:12 AM Jul 16, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 106.

WHERE: A portion of southwest California.

WHEN: Until 8 PM PDT this evening.

IMPACTS: There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.
Updated: Jul 16, 1:44 AM Source: NWS Alert