Today | Weather | Wednesday, October 1, 2025

Weather in San Leandro, California

11:29 AM

Now

68° F

Feels Like 66°

Precipitation 37 %

Wind 8 mph

UV Index (0 - 11+) 11

Humidity 65 %

Today

Day 72°

Night 63°

Precipitation 95 %

Wind 7 mph

UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

San Leandro Weather Forecast Updated

46 minutes ago

Last updated on October 01, 2025 10:43 AM

Air quality in San Leandro

NOW

35 AQI

Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 7.04 µg/m³

PM10 8.81 µg/m³

O₃ 27.10 ppb

NO₂ 8.58 ppb

SO₂ 1.49 ppb

CO 156.03 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast