{"url_path":"/weather/alerts/2.49.0.1.840.0.be54066a787a5de6e7234a1f95eee5243b7a283f.001.1","section_key":"alert","section_title":"Air Quality Alert issued May 18 at 7:40PM PDT by NWS San Diego CA","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.be54066a787a5de6e7234a1f95eee5243b7a283f.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS San Diego CA"},"word_count":252,"has_tables":false,"body_markdown":"# Air Quality Alert: Air Quality Alert issued May 18 at 7:40PM PDT by NWS San Diego CA\n\n**Severity:** Unknown\n**Certainty:** Unknown\n**Urgency:** Unknown\n**Areas:** Santa Ana Mountains and Foothills; Orange County Coastal; Orange County Inland\n**Issued by:** NWS San Diego CA\n**Sent:** 2026-05-18T19:40:00-07:00\n**Effective:** 2026-05-18T19:40:00-07:00\n**Expires:** 2026-05-19T19:45:00-07:00\n\n## Description\n* WHAT...The South Coast AQMD has issued an air quality alert due to\nincreased fine particle pollution from wildfire smoke. Visit\nhttps://www.aqmd.gov/alertinfo to check current and forecasted air\nquality levels.\n\n* WHERE...most of LA County and all of Orange County. Levels of\nparticle pollution can vary by time and location depending on fire\nactivity and local weather conditions.\n\n* WHEN...until Tuesday evening.\n\n* IMPACTS...Particles in wildfire smoke can get deep into the lungs\nand cause serious health problems such as heart attacks, strokes,\nasthma attacks, and difficulty breathing. Everyone can be affected,\nbut people with lung or heart disease, older adults, people who are\npregnant, children, and those who spend a lot of time outdoors are\nat greater risk.\n\n## Instructions\nTo protect your health, if you smell or see smoke:\n\n* Remain indoors with windows and doors closed\n* Avoid intense outdoor physical activity\n* Run your air conditioner and/or an air purifier\n* If you must be outdoors, keep the time brief and wear a well-\nfitting N-95 mask\n* Do not use whole house fans or swamp coolers that bring in outside\nair if you have other methods to stay cool\n* Avoid other sources of pollution such as fireplaces, candles,\nincense, grilling, and gasoline-powered lawn and garden\nequipment"}