Today | Weather | Tuesday, December 9, 2025

Weather in Oceanside, California

11:13 PM
Now
Night
46° F
Feels Like 46°
Precipitation 0 %
Wind 4 mph
Humidity 80 %
Today
Night
Day 81°
Night 43°
Precipitation 0 %
Wind 4 mph

Oceanside Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 9, 2024)
Night

Day

64°

Night

34°

Wind

4 mph

Precipitation

0 %

Air Quality in Oceanside

NOW
154 AQI
Unhealthy air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 63.11 µg/m³
PM10 75.63 µg/m³
O3 0.050 ppm
NO2 3.8 ppb
SO2 0.6 ppb
CO 0.45 ppm
NH3 0.27 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:

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Show raw pollutant concentrations (µg/m³)
PM2.563.11 µg/m³
PM1075.63 µg/m³
O398.55 µg/m³
NO27.16 µg/m³
SO21.65 µg/m³
CO514.65 µg/m³
NH30.27 µg/m³
NO0 µg/m³