Today | Weather | Saturday, August 8, 2026
Active Weather Warnings

Weather in Modesto, California

11:55 PM
Today
Night
Day 99°
Night 70°
Precipitation 0 %
Wind 6 mph

Modesto Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (August 8, 2025)
Cloudy Night

Day

100°

Night

72°

Wind

5 mph

Precipitation

0 %

Air Quality in Modesto

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

Pollutant Concentrations:

PM2.5 7.72 µg/m³
PM10 17.69 µg/m³
O3 0.032 ppm
NO2 2.8 ppb
SO2 0.3 ppb
CO 0.09 ppm
NH3 0.6 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)
PM2.57.72 µg/m³
PM1017.69 µg/m³
O363.78 µg/m³
NO25.27 µg/m³
SO20.72 µg/m³
CO105.42 µg/m³
NH30.6 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Modesto

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 8 at 11:02AM PDT until August 9 at 10:00PM PDT by NWS Sacramento CA
Aug 8, 11:02 AM Aug 9, 10:00 PM
WHAT: High temperatures of 102 to 108 and low temperatures of 65
to 80 expected, with Moderate to Major HeatRisk.

WHERE: The Sacramento and San Joaquin Valleys, Foothills, Coast
Range, and Sierra north of Highway 50.

WHEN: Until 10 PM PDT Sunday.

IMPACTS: Hot temperatures may cause heat illnesses, especially
anyone without effective cooling and/or adequate hydration.

ADDITIONAL DETAILS: The heat is expected to peak today and
Sunday, with areas of Major HeatRisk. Hottest temperatures and
warmest overnight lows expected in the northern Sacramento Valley
and Sierra foothills thermal belts.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Aug 8, 11:46 PM Source: NWS Alert