Today | Weather | Tuesday, January 13, 2026

Weather in Santa Rosa, California

12:28 PM
Now
Foggy Weather
59° F
Feels Like 64°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 3
Humidity 61 %
Today
Cloudy Weather
Day 66°
Night 36°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 3

Santa Rosa Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Sunny Weather

Day

66°

Night

34°

Wind

12 mph

UV Index

3

Precipitation

0 %

Air Quality in Santa Rosa

NOW
62 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 17.6 µg/m³
PM10 22.89 µg/m³
O3 0.032 ppm
NO2 6.9 ppb
SO2 1.2 ppb
CO 0.24 ppm
NH3 0.49 µg/m³
NO 4.03 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)
PM2.517.6 µg/m³
PM1022.89 µg/m³
O363.05 µg/m³
NO212.99 µg/m³
SO23.05 µg/m³
CO275.89 µg/m³
NH30.49 µg/m³
NO4.03 µg/m³