Today | Weather | Monday, September 14, 2026

Weather in Modesto, California

03:50 PM
Now
Sunny Weather
86° F
Feels Like 86°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 3
Humidity 20 %
Today
Cloudy Weather
Day 88°
Night 55°
Precipitation 1 %
Wind 9 mph
UV Index (0 - 11+) 6

Modesto Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 14, 2025)
Sunny Weather

Day

90°

Night

61°

Wind

9 mph

UV Index

60

Precipitation

0 %

Air Quality in Modesto

NOW
51 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.89 µg/m³
PM10 11.7 µg/m³
O3 0.054 ppm
NO2 0.5 ppb
SO2 0.4 ppb
CO 0.17 ppm
NH3 0.2 µg/m³
NO 0.17 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.56.89 µg/m³
PM1011.7 µg/m³
O3106.52 µg/m³
NO20.98 µg/m³
SO21.05 µg/m³
CO189.21 µg/m³
NH30.2 µg/m³
NO0.17 µg/m³