{"url_path":"/weather/alerts/2.49.0.1.840.0.4a5a8c6be98dc62fc66bd8e3528716a1279e47cb.002.1","section_key":"alert","section_title":"Air Quality Alert issued May 18 at 9:43AM EDT by NWS Boston/Norton MA","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4a5a8c6be98dc62fc66bd8e3528716a1279e47cb.002.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Boston/Norton MA"},"word_count":125,"has_tables":false,"body_markdown":"# Air Quality Alert: Air Quality Alert issued May 18 at 9:43AM EDT by NWS Boston/Norton MA\n\n**Severity:** Unknown\n**Certainty:** Unknown\n**Urgency:** Unknown\n**Areas:** Western Hampshire; Western Hampden; Eastern Hampshire; Eastern Hampden\n**Issued by:** NWS Boston/Norton MA\n**Sent:** 2026-05-18T09:43:00-04:00\n**Effective:** 2026-05-18T09:43:00-04:00\n**Expires:** 2026-05-19T00:00:00-04:00\n\n## Description\nThe Massachusetts Department of Environmental Protection has issued\nan Air Quality Alert for Ground Level Ozone, until 11 PM EDT this\nevening.\n\nAn Air Quality Alert means that Ground Level Ozone concentrations\nwithin the region may approach or exceed levels that are Unhealthy\nfor Sensitive Groups.\n\nAir is unhealthy for sensitive children and adults, such as those\nwith asthma, lung or heart disease, and older adults. Sensitive\nchildren and adults should limit prolonged outdoor activity.\n\nFor additional information, please visit the Massachusetts\nDepartment of Environmental Protection website at:\nhttps://mass.gov/dep/massair/forecast"}