Today | Weather | Tuesday, August 25, 2026

Active Weather Warnings

Weather in Oceanside, California

03:08 AM

Now

70° F

Feels Like 72°

Precipitation 7 %

Wind 1 mph

Humidity 89 %

Today

Day 84°

Night 66°

Precipitation 0 %

Wind 8 mph

UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

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.

Oceanside Weather Forecast Updated

27 minutes ago

Last updated on August 25, 2026 at 2:40 AM

Weather Forecast History

Last Year's Weather on This Day (August 25, 2025)

Day

79°

Night

64°

Wind

2 mph

Precipitation

1 %

Air Quality in Oceanside

NOW

54 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 13.77 µg/m³

PM₁₀ 26.99 µg/m³

O₃ 0.034 ppm

NO₂ 0.3 ppb

SO₂ 0.2 ppb

CO 0.08 ppm

NH₃ 0 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 13.77 µg/m³

PM₁₀ – 26.99 µg/m³

O₃ – 67.44 µg/m³

NO₂ – 0.65 µg/m³

SO₂ – 0.49 µg/m³

CO – 89.36 µg/m³

NH₃ – 0 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Oceanside

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued August 22 at 1:10PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

Aug 25, 10:00 AM → Aug 28, 8:00 PM

WHAT: Dangerously hot conditions with high temperatures reaching
the upper 80s to low 90s with limited overnight cooling.

WHERE: Orange County Coastal Areas and San Diego County Coastal
Areas.

WHEN: From Tuesday morning through Friday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.

ADDITIONAL DETAILS: The combination of hot daytime temperatures
with overnight temperatures struggling to drop below the lower 70s
will especially affect those without access to air conditioning.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Updated: Aug 22, 5:12 PM Source: NWS Alert

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 24 at 10:04PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA