Today | Weather | Friday, November 21, 2025

Weather in Concord, California

08:20 AM
Now
Sunny Weather
48° F
Feels Like 50°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 1
Humidity 83 %
Today
Cloudy Weather
Day 64°
Night 43°
Precipitation 2 %
Wind 5 mph
UV Index (0 - 11+) 3

Concord Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 21, 2024)
Cloudy Weather

Day

66°

Night

61°

Wind

12 mph

Precipitation

40 %

Air Quality in Concord

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.43 µg/m³
PM10 5.21 µg/m³
O3 0.028 ppm
NO2 4.4 ppb
SO2 0.7 ppb
CO 0.14 ppm
NH3 0.13 µg/m³
NO 0.16 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)
PM2.52.43 µg/m³
PM105.21 µg/m³
O354.18 µg/m³
NO28.28 µg/m³
SO21.94 µg/m³
CO154.67 µg/m³
NH30.13 µg/m³
NO0.16 µg/m³