Today | Weather | Tuesday, April 21, 2026

Weather in Santa Maria, California

03:45 PM
Now
Partly Sunny with Showers
66° F
Feels Like 63°
Precipitation 55 %
Wind 14 mph
UV Index (0 - 11+) 2
Humidity 57 %
Today
Partly Sunny with Showers
Day 68°
Night 46°
Precipitation 100 %
Wind 10 mph
UV Index (0 - 11+) 4

Santa Maria Weather Forecast Updated

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

Day

68°

Night

48°

Wind

8 mph

UV Index

9

Precipitation

25 %

Air Quality in Santa Maria

NOW
52 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.95 µg/m³
PM10 2.98 µg/m³
O3 0.055 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0 µg/m³
NO 0.03 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)
PM2.50.95 µg/m³
PM102.98 µg/m³
O3107.4 µg/m³
NO20.15 µg/m³
SO20.28 µg/m³
CO137.62 µg/m³
NH30 µg/m³
NO0.03 µg/m³