Today | Weather | Sunday, September 21, 2025

Weather in Roseville, California

08:57 PM

Now

81° F

Feels Like 79°

Precipitation 0 %

Wind 6 mph

Humidity 44 %

Today

Day 91°

Night 63°

Precipitation 0 %

Wind 10

Roseville Weather Forecast Updated

29 minutes ago

Last updated on September 21, 2025 8:27 PM

Last Year's Weather on This Day (September 21, 2024)

90°

61°

4 mph

NOW

62 AQI

Moderate air quality Dominant pollutant: O3

PM2.5 10.08 µg/m³

PM10 22.23 µg/m³

O₃ 51.74 ppb

NO₂ 10.13 ppb

SO₂ 0.88 ppb

CO 335.05 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.