Today | Weather | Saturday, August 29, 2026

Active Weather Warnings

Heat Advisory

Weather in Newport Beach, California

01:55 AM

Now

73° F

Feels Like 81°

Precipitation 0 %

Wind 5 mph

Humidity 93 %

Today

Day 84°

Night 72°

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.

Newport Beach Weather Forecast Updated

41 minutes ago

Last updated on August 29, 2026 at 1:13 AM

Air Quality in Newport Beach

NOW

110 AQI

Unhealthy air quality for sensitive groups Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 39.58 µg/m³

PM₁₀ 58.79 µg/m³

O₃ 0.046 ppm

NO₂ 0.6 ppb

SO₂ 0.2 ppb

CO 0.13 ppm

NH₃ 0.16 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 39.58 µg/m³

PM₁₀ – 58.79 µg/m³

O₃ – 90.49 µg/m³

NO₂ – 1.06 µg/m³

SO₂ – 0.57 µg/m³

CO – 152.29 µg/m³

NH₃ – 0.16 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Newport Beach

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 28 at 9:06PM PDT until August 29 at 8:00PM PDT by NWS San Diego CA

Aug 28, 9:06 PM → Aug 29, 8:00 PM

WHAT: High temperatures up to 89 Saturday. Low temperatures will
be in the low 70s.

WHERE: Orange County Coastal Areas.

WHEN: Until 8 PM PDT Saturday.

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

ADDITIONAL DETAILS: Temperatures will fall to below normal by
Sunday.

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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

Updated: Aug 29, 1:13 AM Source: NWS Alert