Today | Weather | Thursday, February 26, 2026

Active Weather Warnings

Dense Fog Advisory

Weather in Modesto, California

07:04 AM

Now

55° F

Feels Like 54°

Precipitation 0 %

Wind 6 mph

UV Index (0 - 11+) 1

Humidity 91 %

Today

Day 72°

Night 52°

Precipitation 3 %

Wind 9 mph

UV Index (0 - 11+) 4

Modesto Weather Forecast Updated

59 minutes ago

Last updated on February 26, 2026 at 6:04 AM

Weather Forecast History

Last Year's Weather on This Day (February 26, 2025)

Day

72°

Night

45°

Wind

4 mph

UV Index

Precipitation

0 %

Air Quality in Modesto

NOW

44 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 10.64 µg/m³

PM₁₀ 14.59 µg/m³

O₃ 0.005 ppm

NO₂ 8.6 ppb

SO₂ 0.1 ppb

CO 0.22 ppm

NH₃ 0.89 µg/m³

NO 0.27 µg/m³

PM_2.5 – 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)

PM_2.5 – 10.64 µg/m³

PM₁₀ – 14.59 µg/m³

O₃ – 9.04 µg/m³

NO₂ – 16.16 µg/m³

SO₂ – 0.32 µg/m³

CO – 253.48 µg/m³

NH₃ – 0.89 µg/m³

NO – 0.27 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Modesto

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued February 26 at 2:20AM PST until February 26 at 10:00AM PST by NWS Sacramento CA

Feb 26, 2:20 AM → Feb 26, 10:00 AM

WHAT: Visibility one quarter mile or less in dense fog.

WHERE: Northern San Joaquin Valley and Southern Sacramento Valley.

WHEN: Until 10 AM PST this morning.

IMPACTS: Low visibility could make driving conditions hazardous.

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If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Updated: Feb 26, 6:04 AM Source: NWS Alert