Today | Weather | Thursday, February 5, 2026

Weather in Antioch, California

05:34 PM
Now
Cloudy Night
61° F
Feels Like 59°
Precipitation 0 %
Wind 5 mph
Humidity 73 %
Today
Cloudy Weather
Day 66°
Night 46°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Antioch Weather Forecast Updated

22 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Cloudy Weather

Day

57°

Night

41°

Wind

6 mph

UV Index

3

Precipitation

1 %

Air Quality in Antioch

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

Pollutant Concentrations:

PM2.5 46.02 µg/m³
PM10 53 µg/m³
O3 0.044 ppm
NO2 12 ppb
SO2 0.9 ppb
CO 0.35 ppm
NH3 1.24 µg/m³
NO 0.03 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)
PM2.546.02 µg/m³
PM1053 µg/m³
O387.05 µg/m³
NO222.66 µg/m³
SO22.46 µg/m³
CO395.9 µg/m³
NH31.24 µg/m³
NO0.03 µg/m³