Today | Weather | Sunday, July 19, 2026

Weather in Antioch, California

10:30 PM
Now
Cloudy Night
72° F
Feels Like 70°
Precipitation 0 %
Wind 12 mph
Humidity 44 %
Today
Cloudy Night
Day 88°
Night 63°
Precipitation 0 %
Wind 10 mph

Antioch Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 19, 2025)
Night

Day

84°

Night

55°

Wind

9 mph

Precipitation

0 %

Air Quality in Antioch

NOW
28 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.31 µg/m³
PM10 15.04 µg/m³
O3 0.030 ppm
NO2 1.7 ppb
SO2 0.3 ppb
CO 0.09 ppm
NH3 0.06 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)
PM2.55.31 µg/m³
PM1015.04 µg/m³
O359.5 µg/m³
NO23.15 µg/m³
SO20.75 µg/m³
CO101.59 µg/m³
NH30.06 µg/m³
NO0 µg/m³