Today | Weather | Friday, October 30, 2026

Weather in Tracy, California

03:22 AM
Now
Cloudy Night
55° F
Feels Like 55°
Precipitation 2 %
Wind 5 mph
Humidity 73 %
Today
Cloudy Weather
Day 72°
Night 50°
Precipitation 10 %
Wind 6 mph
UV Index (0 - 11+) 3

Tracy Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 30, 2025)
Cloudy Night

Day

79°

Night

48°

Wind

6 mph

Precipitation

49 %

Air Quality in Tracy

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.14 µg/m³
PM10 7.16 µg/m³
O3 0.043 ppm
NO2 0.7 ppb
SO2 0.2 ppb
CO 0.11 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 – 2.14 µg/m³
PM10 – 7.16 µg/m³
O3 – 85.27 µg/m³
NO2 – 1.36 µg/m³
SO2 – 0.44 µg/m³
CO – 125.71 µg/m³
NH3 – 0.03 µg/m³
NO – 0 µg/m³