# Air Quality Alert: Calabasas and Agoura Hills; Eastern San Fernando Valley; Eastern Santa Monica Mountains Recreational Area; Interstate 5 Corridor; Los Angeles County Beaches; Los Angeles County Inland Coast including Downtown Los Angeles; Los Angeles County San Gabriel Valley; Malibu Coast; Palos Verdes Hills; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western Santa Monica Mountains Recreational Area — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/65dc8f413b75d7ab

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-04 10:44 ingested 2026-07-05 09:02

[original source ↗](http://www.weather.gov/)

## extract

Air Quality Alert — Calabasas and Agoura Hills; Eastern San Fernando Valley; Eastern Santa Monica Mountains Recreational Area; Interstate 5 Corridor; Los Angeles County Beaches; Los Angeles County Inland Coast including Downtown Los Angeles; Los Angeles County San Gabriel Valley; Malibu Coast; Palos Verdes Hills; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western Santa Monica Mountains Recreational Area
Severity: Unknown. Certainty: Unknown.
* WHAT...The South Coast AQMD has issued an air quality alert due to
harmful levels of fine particle pollution.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.

* WHERE...Most of Los Angeles County. Levels of particle pollution
can vary by time and location depending on emissions and local
weather conditions.

* WHEN...High particle pollution due to fireworks expected from dusk
Saturday until 3 PM Sunday.

* IMPACTS...Particle pollution can get deep into the lungs and cause
serious health problems such as heart attacks, bronchitis, asthma
attacks, and difficulty breathing. Everyone can be affected, but
sensitive groups such as people with lung or heart disease, older
adults, people who are pregnant, children, and those who spend a lot
of time outdoors are at greater risk.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.