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Hourly Weather | Today › Friday, October 9, 2026
Active Weather Warnings
Newport Beach, California
10 PM
Cloudy Night
70°
Feels Like 72°
0
Humidity: 90%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
70°
Feels Like 72°
0
Humidity: 89%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

10 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.48 µg/m³
  • PM10: 23.42 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.42 µg/m³
  • PM10: 23.77 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Newport Beach

Severe Expected Likely

Coastal Flood Warning

Coastal Flood Warning issued October 9 at 1:42PM PDT until October 11 at 3:00PM PDT by NWS San Diego CA
Oct 9, 1:42 PM → Oct 11, 3:00 PM
WHAT: For the Coastal Flood Warning, significant coastal
flooding and erosion possible. For the Beach Hazards Statement,
surf of 5 to 7 feet with local sets up to 9 feet. For the
Coastal Flood Advisory, minor coastal flooding expected.

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

WHEN: For the Coastal Flood Warning, until 3 PM PDT Sunday.
For the Beach Hazards Statement, from Sunday morning through
Sunday evening. For the Coastal Flood Advisory, from 3 PM
Sunday to 2 PM PDT Tuesday.

IMPACTS: Numerous roads and walking paths may be closed due to
high water. Low-lying property including homes, businesses, and
some critical infrastructure may flood. Shoreline erosion will
occur during high tides in the mornings. Increased surf will
lead to a high risk of rip currents.

ADDITIONAL DETAILS: Greatest impacts on Sunday morning from
Tropical Storm Rachel in combination of increased swell, onshore
winds, and high tides locally over 7 feet.
+ Read More
Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Remain out of the water to avoid hazardous swimming conditions.
Updated: Oct 9, 8:12 PM Source: NWS Alert
Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued October 9 at 2:12AM PDT until October 9 at 11:00PM PDT by NWS San Diego CA
Oct 9, 2:12 AM → Oct 9, 11:00 PM
WHAT: For the Beach Hazards Statement, surf of 3 to 5 feet with
sets to 6 feet and dangerous rip currents expected. For the
Coastal Flood Advisory, minor coastal flooding expected during
high tides.

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

WHEN: For the Coastal Flood Advisory, until 2 PM PDT Tuesday.
For the Beach Hazards Statement, through Friday evening.

IMPACTS: Flooding of beach parking lots, boardwalks, and
roads with only isolated road closures expected. Minor coastal
erosion is also expected. Additionally, elevated surf will
lead to strong rip currents and dangerous swimming conditions.

ADDITIONAL DETAILS: High tides are expected to peak between
6.5 and 7.0 feet during the mornings and evenings. Additional
south swells may produce another round of elevated to high
surf Sunday through Tuesday, highest on Sunday.
+ Read More
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Updated: Oct 9, 1:27 PM Source: NWS Alert
Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued October 9 at 2:12AM PDT until October 13 at 2:00PM PDT by NWS San Diego CA
Oct 9, 2:12 AM → Oct 13, 2:00 PM
WHAT: For the Beach Hazards Statement, surf of 3 to 5 feet with
sets to 6 feet and dangerous rip currents expected. For the
Coastal Flood Advisory, minor coastal flooding expected during
high tides.

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

WHEN: For the Coastal Flood Advisory, until 2 PM PDT Tuesday.
For the Beach Hazards Statement, through Friday evening.

IMPACTS: Flooding of beach parking lots, boardwalks, and
roads with only isolated road closures expected. Minor coastal
erosion is also expected. Additionally, elevated surf will
lead to strong rip currents and dangerous swimming conditions.

ADDITIONAL DETAILS: High tides are expected to peak between
6.5 and 7.0 feet during the mornings and evenings. Additional
south swells may produce another round of elevated to high
surf Sunday through Tuesday, highest on Sunday.
+ Read More
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Updated: Oct 9, 1:27 PM Source: NWS Alert

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