Today | Weather | Wednesday, May 20, 2026

Weather in Santa Maria, California

10:06 PM
Now
Rainy Weather
52° F
Feels Like 52°
Precipitation 45 %
Wind 5 mph
Humidity 94 %
Today
Cloudy Night
Day 77°
Night 48°
Precipitation 0 %
Wind 5 mph

Santa Maria Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 20, 2025)
Cloudy Weather

Day

72°

Night

46°

Wind

12 mph

UV Index

11

Precipitation

25 %

Air Quality in Santa Maria

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.91 µg/m³
PM10 27.1 µg/m³
O3 0.038 ppm
NO2 0.6 ppb
SO2 0.4 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0 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)
PM2.57.91 µg/m³
PM1027.1 µg/m³
O374.28 µg/m³
NO21.12 µg/m³
SO21.11 µg/m³
CO102.37 µg/m³
NH30 µg/m³
NO0 µg/m³