Today | Weather | Tuesday, April 21, 2026

Weather in Concord, California

03:24 PM
Now
Stormy Weather
63° F
Feels Like 59°
Precipitation 46 %
Wind 14 mph
UV Index (0 - 11+) 1
Humidity 67 %
Today
Stormy Weather
Day 63°
Night 48°
Precipitation 88 %
Wind 10 mph
UV Index (0 - 11+) 2

Concord Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 21, 2025)
Sunny Weather

Day

82°

Night

54°

Wind

4 mph

UV Index

8

Precipitation

0 %

Air Quality in Concord

NOW
50 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.53 µg/m³
PM10 1.03 µg/m³
O3 0.054 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0 µg/m³
NO 0.04 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)
PM2.50.53 µg/m³
PM101.03 µg/m³
O3105.47 µg/m³
NO20.26 µg/m³
SO20.32 µg/m³
CO143.01 µg/m³
NH30 µg/m³
NO0.04 µg/m³