Today | Weather | Monday, April 27, 2026

Weather in Modesto, California

07:55 PM
Now
Night
64° F
Feels Like 63°
Precipitation 0 %
Wind 7 mph
Humidity 38 %
Today
Night
Day 70°
Night 46°
Precipitation 3 %
Wind 6 mph

Modesto Weather Forecast Updated

27 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Partly Sunny with Showers

Day

63°

Night

46°

Wind

6 mph

UV Index

4

Precipitation

78 %

Air Quality in Modesto

NOW
51 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.97 µg/m³
PM10 4.39 µg/m³
O3 0.054 ppm
NO2 0.7 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 0.4 µg/m³
NO 0.01 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)
PM2.51.97 µg/m³
PM104.39 µg/m³
O3106.52 µg/m³
NO21.3 µg/m³
SO20.51 µg/m³
CO132.71 µg/m³
NH30.4 µg/m³
NO0.01 µg/m³