Today | Weather | Tuesday, January 13, 2026

Weather in Antioch, California

12:27 PM
Now
Foggy Weather
52° F
Feels Like 54°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 78 %
Today
Cloudy Weather
Day 59°
Night 34°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Antioch Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Sunny Weather

Day

61°

Night

34°

Wind

9 mph

UV Index

3

Precipitation

0 %

Air Quality in Antioch

NOW
139 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 51.03 µg/m³
PM10 60.16 µg/m³
O3 0.031 ppm
NO2 18.7 ppb
SO2 1.8 ppb
CO 0.42 ppm
NH3 0.79 µg/m³
NO 11.74 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.551.03 µg/m³
PM1060.16 µg/m³
O360.76 µg/m³
NO235.12 µg/m³
SO24.71 µg/m³
CO475.87 µg/m³
NH30.79 µg/m³
NO11.74 µg/m³