Today | Weather | Wednesday, February 4, 2026

Weather in Downey, California

02:53 PM
Now
Sunny Weather
91° F
Feels Like 91°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 11 %
Today
Sunny Weather
Day 91°
Night 57°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4

Downey Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (February 4, 2025)
Cloudy Weather

Day

66°

Night

55°

Wind

4 mph

UV Index

3

Precipitation

7 %

Air Quality in Downey

NOW
137 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 50.24 µg/m³
PM10 62.04 µg/m³
O3 0.072 ppm
NO2 16.8 ppb
SO2 1 ppb
CO 0.44 ppm
NH3 0.62 µg/m³
NO 4.23 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.550.24 µg/m³
PM1062.04 µg/m³
O3141.97 µg/m³
NO231.58 µg/m³
SO22.58 µg/m³
CO506.34 µg/m³
NH30.62 µg/m³
NO4.23 µg/m³