Today | Weather | Wednesday, August 26, 2026

Weather in Roseville, California

05:33 PM
Now
Cloudy Weather
99° F
Feels Like 99°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 11 %
Today
Sunny Weather
Day 99°
Night 66°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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.

Roseville Weather Forecast Updated

50 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 26, 2025)
Cloudy Night

Day

95°

Night

63°

Wind

8 mph

Precipitation

1 %

Air Quality in Roseville

NOW
57 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.95 µg/m³
PM10 8.44 µg/m³
O3 0.056 ppm
NO2 3.8 ppb
SO2 1.1 ppb
CO 0.10 ppm
NH3 0.53 µg/m³
NO 1.05 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)
PM2.55.95 µg/m³
PM108.44 µg/m³
O3110.23 µg/m³
NO27.24 µg/m³
SO22.8 µg/m³
CO116.5 µg/m³
NH30.53 µg/m³
NO1.05 µg/m³