Today | Weather | Wednesday, October 7, 2026
Active Weather Warnings

Weather in Norwalk, California

03:21 PM
Now
Sunny Weather
99° F
Feels Like 99°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 4
Humidity 27 %
Today
Hot Day
Day 100°
Night 70°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 5

Norwalk Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 7, 2025)
Cloudy Night

Day

77°

Night

61°

Wind

4 mph

Precipitation

0 %

Air Quality in Norwalk

NOW
54 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 13.65 µg/m³
PM10 30.12 µg/m³
O3 0.050 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.10 ppm
NH3 0 µg/m³
NO 0.05 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 13.65 µg/m³
PM10 – 30.12 µg/m³
O3 – 97.7 µg/m³
NO2 – 0.33 µg/m³
SO2 – 0.56 µg/m³
CO – 117.55 µg/m³
NH3 – 0 µg/m³
NO – 0.05 µg/m³

Weather Alerts and Warnings for Norwalk

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued September 30 at 9:46AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Oct 2, 10:00 AM → Oct 8, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 90 at the
coast and 105 in the valleys.

WHERE: Coast and valleys of Los Angeles and Ventura Counties.

WHEN: From Friday morning through Thursday, October 08.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.

ADDITIONAL DETAILS: Very hot temperatures are likely to continue
into the second week of October, possibly requiring an extension of
this product.
+ 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.
Updated: Oct 1, 10:56 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued October 7 at 9:41AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Oct 7, 9:41 AM → Oct 8, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 99.

WHERE: A portion of southwest California.

WHEN: Until 8 PM PDT Thursday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Oct 7, 2:08 PM Source: NWS Alert