Today | Weather | Wednesday, October 28, 2026

Weather in Modesto, California

06:54 AM
Now
Cloudy Night
46° F
Feels Like 45°
Precipitation 0 %
Wind 6 mph
Humidity 96 %
Today
Cloudy Weather
Day 70°
Night 46°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 4

Modesto Weather Forecast Updated

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

Day

73°

Night

46°

Wind

4 mph

Precipitation

0 %

Air Quality in Modesto

NOW
23 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 5.48 µg/m³
PM10 13.7 µg/m³
O3 0.020 ppm
NO2 5.1 ppb
SO2 0.2 ppb
CO 0.18 ppm
NH3 0.56 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 – 5.48 µg/m³
PM10 – 13.7 µg/m³
O3 – 40.11 µg/m³
NO2 – 9.51 µg/m³
SO2 – 0.41 µg/m³
CO – 204.46 µg/m³
NH3 – 0.56 µg/m³
NO – 0 µg/m³