Today | Weather | Sunday, November 1, 2026

Weather in Norwalk, Connecticut

11:33 PM
Today
Night
Day 59°
Night 39°
Precipitation 1 %
Wind 5 mph

Norwalk Weather Forecast Updated

21 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 1, 2025)
Cloudy Night

Day

57°

Night

41°

Wind

7 mph

Precipitation

1 %

Air Quality in Norwalk

NOW
38 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.02 µg/m³
PM10 12.72 µg/m³
O3 0.022 ppm
NO2 12.5 ppb
SO2 0.4 ppb
CO 0.24 ppm
NH3 0.28 µg/m³
NO 0.01 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 9.02 µg/m³
PM10 – 12.72 µg/m³
O3 – 43.97 µg/m³
NO2 – 23.52 µg/m³
SO2 – 1.06 µg/m³
CO – 278.13 µg/m³
NH3 – 0.28 µg/m³
NO – 0.01 µg/m³