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NOAA's National Weather Service
Each location shows all alerts on one page:
WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
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| San Bernardino County | ||
| Effective: Sat, 7/4 9:20am | Severity: Unknown | |
| Updated: July 4, 2026 11:45 pm | Urgency: Unknown | |
| Expires: Sun, 7/5 3:00pm | Certainty: Unknown | |
| Areas Affected: San Bernardino and Riverside County Valleys-The Inland Empire - Orange County Coastal - Orange County Inland | ||
Alert
Details:
* 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 Orange County and the Inland Empire. 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. 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, grilling, and gasoline-powered lawn and garden equipment |
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