{"url_path":"/weather/alerts/2.49.0.1.840.0.8243afb5bc7e9d4030eb2008c886c9d3f39130a3.003.1","section_key":"alert","section_title":"Air Quality Alert issued July 17 at 9:33PM EDT by NWS Northern Indiana","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-17","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.8243afb5bc7e9d4030eb2008c886c9d3f39130a3.003.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Northern Indiana"},"word_count":235,"has_tables":false,"body_markdown":"# Air Quality Alert: Air Quality Alert issued July 17 at 9:33PM EDT by NWS Northern Indiana\n\n**Severity:** Unknown\n**Certainty:** Unknown\n**Urgency:** Unknown\n**Areas:** Northern La Porte; Southern La Porte\n**Issued by:** NWS Northern Indiana\n**Sent:** 2026-07-17T21:33:00-04:00\n**Effective:** 2026-07-17T21:33:00-04:00\n**Expires:** 2026-07-19T00:00:00-04:00\n\n## Description\nThe officials at the Indiana Department of Environmental Management\nhave declared an Air Quality Action Day, in effect from Friday\nthrough Monday.\n\nHeavy smoke is lingering for the northern half of Indiana currently\ndivided by a stationary front. The front will lift north later Friday\nproviding a brief break in levels before a system late Saturday\nwill bring another round of smoke. High pressure in place Sunday\nand Monday will recirculate the smoke over most of the state with the\nprimary concern remaining the northern half of Indiana. This smoke,\nin addition to the other meteorological factors such as light\nwinds and predicted flow from the north, will produce high PM2.5\nreadings.\n\n- Friday: Very Unhealthy conditions for Northwest Indiana.\n- Saturday: Unhealthy for Sensitive Groups (USG) conditions for\nNorthwest Indiana.\n- Sunday: Unhealthy conditions for Northwest Indiana.\n- Monday: Unhealthy conditions for Northwest Indiana\n\nDue to observed and forecasted high concentrations of PM2.5 readings\nin the area, recommendations are for the pubic to avoid or limit\noutdoor exposure to wildfire smoke, reduce or avoid exertion or heavy\nwork outdoors and keep windows and doors closed as much as possible.\n\nFor additional information, please visit the IDEM Smog page at:\n\nhttp://www.in.gov/idem/airmonitoring/smogwatch/"}