Today | Weather | Thursday, May 21, 2026

Weather in Sacramento, California

08:19 AM
Now
Cloudy Weather
66° F
Feels Like 68°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 2
Humidity 57 %
Today
Cloudy Weather
Day 95°
Night 57°
Precipitation 0 %
Wind 6 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.

Sacramento Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Sunny Weather

Day

93°

Night

57°

Wind

6 mph

UV Index

10

Precipitation

1 %

Air Quality in Sacramento

NOW
28 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 6.83 µg/m³
PM10 13.78 µg/m³
O3 0.029 ppm
NO2 6.7 ppb
SO2 0.9 ppb
CO 0.16 ppm
NH3 2.92 µg/m³
NO 2.41 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.56.83 µg/m³
PM1013.78 µg/m³
O356.71 µg/m³
NO212.53 µg/m³
SO22.41 µg/m³
CO188.11 µg/m³
NH32.92 µg/m³
NO2.41 µg/m³