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Updated:July 23, 2026 12:01 pm PDT

Heat Advisory HEAT ADVISORY  
Orange County

  Effective: Thu, 7/23 10:14am Severity:  Moderate 
  Updated: July 23, 2026 12:01 pm Urgency: Expected
  Expires: Thu, 7/23 10:00pm Certainty: Likely

Areas Affected: Santa Ana Mountains and Foothills
 
Alert Details:
* WHAT...High temperatures as hot as the 90s to 105 and low
temperatures as warm as the mid 70s to low 80s through the weekend
expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 8 PM PDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Heat Advisory HEAT ADVISORY  
Orange County

  Effective: Thu, 7/23 10:14am Severity:  Moderate 
  Updated: July 23, 2026 12:01 pm Urgency: Expected
  Expires: Thu, 7/23 10:00pm Certainty: Likely

Areas Affected: Orange County Coastal
 
Alert Details:
* WHAT...High temperatures in the mid 80s to lower 90s for the mesas
and other higher coastal terrain and low temperatures in the upper
60s to low 70s expected.

* WHERE...Orange County Coastal Areas.

* WHEN...Until 8 PM PDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Heat Advisory HEAT ADVISORY  
Orange County

  Effective: Thu, 7/23 10:14am Severity:  Moderate 
  Updated: July 23, 2026 12:01 pm Urgency: Expected
  Expires: Thu, 7/23 10:00pm Certainty: Likely

Areas Affected: Orange County Inland
 
Alert Details:
* WHAT...High temperatures in the 90s and low temperatures in the
upper 60s and lower 70s expected.

* WHERE...Orange County Inland Areas.

* WHEN...Until 8 PM PDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Orange County

  Effective: Thu, 7/23 1:21am Severity:  Moderate 
  Updated: July 23, 2026 12:01 pm Urgency: Expected
  Expires: Thu, 7/23 2:00pm Certainty: Likely

Areas Affected: San Diego County Coastal Areas - Orange County Coastal
 
Alert Details:
* WHAT...Surf of 5 to 7 feet expected.

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

* WHEN...Thursday morning through Sunday evening.

* IMPACTS...Increased rip current risk and dangerous swimming
conditions. Minor coastal flooding possible during evening
high tides over the weekend with evening high tides 5.5 to 6.5
feet.

Information:
Remain out of the water to avoid hazardous swimming conditions.
Air Quality Alert AIR QUALITY ALERT  
Orange County

  Effective: Wed, 7/22 5:41pm Severity: Unknown
  Updated: July 23, 2026 12:01 pm Urgency: Unknown
  Expires: Thu, 7/23 5:45pm Certainty: Unknown

Areas Affected: San Bernardino and Riverside County Valleys-The Inland Empire - San Bernardino County Mountains - Coachella Valley - San Gorgonio Pass Near Banning - Orange County Inland
 
Alert Details:
* WHAT...The South Coast AQMD has issued an air quality alert due to
harmful levels of ozone pollution.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.

* WHERE...in the South Coast Air Basin and Coachella Valley. Levels
of ozone pollution can vary by time and location depending on
emissions and air pollution transport.

* WHEN...until 8 PM Monday. The highest ozone levels typically occur
in the afternoon and early-evening hours.

* IMPACTS... Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.

Information:
To protect your health, check air quality levels and act as needed:

* When Air Quality Index (AQI) levels are "Unhealthy for
Sensitive Groups" (orange), sensitive groups as specified
above should limit extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health
impacts. Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should
avoid all outdoor physical activity. Everyone else should
avoid extended or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all
outdoor physical activity.

* ADDITIONAL DETAILS...

To help keep indoor air clean when air quality is poor:

* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in
outside air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, and grilling

To help minimize outdoor ozone air pollution levels:

* Limit the use of gasoline powered lawn and garden equipment
until evening hours
* Try to delay trips to the gas station and the use of household
chemicals until the evening
Air Quality Alert AIR QUALITY ALERT  
Orange County

  Effective: Wed, 7/22 5:40pm Severity: Unknown
  Updated: July 23, 2026 12:01 pm Urgency: Unknown
  Expires: Thu, 7/23 5:45pm Certainty: Unknown

Areas Affected: San Bernardino and Riverside County Valleys-The Inland Empire - San Bernardino County Mountains - Coachella Valley - San Gorgonio Pass Near Banning - Orange County Inland
 
Alert Details:
* WHAT...The South Coast AQMD has issued an air quality alert due to
harmful levels of ozone pollution.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.

* WHERE...in the South Coast Air Basin and Coachella Valley. Levels
of ozone pollution can vary by time and location depending on
emissions and air pollution transport.

* WHEN...until 8 PM Monday. The highest ozone levels typically occur
in the afternoon and early-evening hours.

* IMPACTS... Ozone air pollution can cause serious health problems,
including trouble breathing, asthma attacks, and lung damage.
Everyone can be affected, but sensitive groups such as people with
lung disease, older adults, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.

Information:
To protect your health, check air quality levels and act as needed:

* When Air Quality Index (AQI) levels are "Unhealthy for
Sensitive Groups" (orange), sensitive groups as specified
above should limit extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health
impacts. Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should
avoid all outdoor physical activity. Everyone else should
avoid extended or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all
outdoor physical activity.

* ADDITIONAL DETAILS...

To help keep indoor air clean when air quality is poor:

* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in
outside air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, and grilling

To help minimize outdoor ozone air pollution levels:

* Limit the use of gasoline powered lawn and garden equipment
until evening hours
* Try to delay trips to the gas station and the use of household
chemicals until the evening