Today | Weather | Wednesday, February 25, 2026

Weather in Concord, California

11:46 PM
Now
Cloudy Night
57° F
Feels Like 57°
Precipitation 7 %
Wind 5 mph
Humidity 86 %
Today
Cloudy Weather
Day 72°
Night 50°
Precipitation 3 %
Wind 5 mph
UV Index (0 - 11+) 4

Concord Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Cloudy Weather

Day

68°

Night

41°

Wind

4 mph

UV Index

4

Precipitation

25 %

Air Quality in Concord

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.1 µg/m³
PM10 7.05 µg/m³
O3 0.028 ppm
NO2 2.3 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 0.02 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)
PM2.54.1 µg/m³
PM107.05 µg/m³
O354.8 µg/m³
NO24.25 µg/m³
SO20.75 µg/m³
CO145.35 µg/m³
NH30.02 µg/m³
NO0 µg/m³