Today | Weather | Thursday, January 1, 2026

Weather in Downey, California

11:37 PM
Now
Cloudy Night
63° F
Feels Like 61°
Precipitation 49 %
Wind 6 mph
Humidity 77 %
Today
Rainy Weather
Day 72°
Night 59°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 1

Downey Weather Forecast Updated

18 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 1, 2025)
Partly Sunny with Showers

Day

68°

Night

46°

Wind

4 mph

UV Index

3

Precipitation

49 %

Air Quality in Downey

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.3 µg/m³
PM10 2.2 µg/m³
O3 0.044 ppm
NO2 0.1 ppb
SO2 0 ppb
CO 0.10 ppm
NH3 0 µg/m³
NO 0 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)
PM2.51.3 µg/m³
PM102.2 µg/m³
O386.37 µg/m³
NO20.16 µg/m³
SO20.11 µg/m³
CO119.4 µg/m³
NH30 µg/m³
NO0 µg/m³