Today | Weather | Wednesday, October 28, 2026

Weather in Concord, California

06:55 AM
Now
Cloudy Night
45° F
Feels Like 46°
Precipitation 0 %
Wind 2 mph
Humidity 99 %
Today
Cloudy Weather
Day 72°
Night 48°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Concord Weather Forecast Updated

39 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 28, 2025)
Night

Day

75°

Night

50°

Wind

1 mph

Precipitation

0 %

Air Quality in Concord

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.09 µg/m³
PM10 6.83 µg/m³
O3 0.041 ppm
NO2 1.2 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 0.03 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)
PM2.5 – 2.09 µg/m³
PM10 – 6.83 µg/m³
O3 – 79.93 µg/m³
NO2 – 2.25 µg/m³
SO2 – 0.81 µg/m³
CO – 146.59 µg/m³
NH3 – 0.03 µg/m³
NO – 0 µg/m³