Today | Weather | Tuesday, April 21, 2026

Weather in Santa Monica, California

04:06 PM
Now
Cloudy Weather
63° F
Feels Like 63°
Precipitation 49 %
Wind 9 mph
UV Index (0 - 11+) 2
Humidity 80 %
Today
Partly Sunny with Showers
Day 64°
Night 55°
Precipitation 90 %
Wind 7 mph
UV Index (0 - 11+) 3

Santa Monica Weather Forecast Updated

25 minutes ago
Last updated on

Air Quality in Santa Monica

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.09 µg/m³
PM10 2.61 µg/m³
O3 0.050 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0 µg/m³
NO 0.02 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)
PM2.51.09 µg/m³
PM102.61 µg/m³
O398.25 µg/m³
NO20.11 µg/m³
SO20.25 µg/m³
CO129.57 µg/m³
NH30 µg/m³
NO0.02 µg/m³