{"url_path":"/weather/alerts/2.49.0.1.840.0.f00b5bdffbc6958bc5481bf0943d9699a260ddba.001.1","section_key":"alert","section_title":"Air Quality Alert issued July 17 at 4:10PM MDT by NWS Denver CO","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.f00b5bdffbc6958bc5481bf0943d9699a260ddba.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Denver CO"},"word_count":240,"has_tables":false,"body_markdown":"# Air Quality Alert: Air Quality Alert issued July 17 at 4:10PM MDT by NWS Denver CO\n\n**Severity:** Unknown\n**Certainty:** Unknown\n**Urgency:** Unknown\n**Areas:** Arapahoe, CO; Adams, CO; Denver, CO; Broomfield, CO; Jefferson, CO; Boulder, CO; Larimer, CO; Weld, CO; Douglas, CO\n**Issued by:** NWS Denver CO\n**Sent:** 2026-07-17T16:11:00-06:00\n**Effective:** 2026-07-17T16:10:00-06:00\n**Expires:** 2026-07-18T16:00:00-06:00\n\n## Description\nThe Colorado Department of Public Health and Environment has\nissued the following...\n\nWHAT...Ozone Action Day Alert.\n\nWHERE...Douglas, Jefferson, Denver, western Arapahoe, western\nAdams, Broomfield, Boulder, Larimer, and Weld Counties\n\nWHEN...400 PM Friday July 17 to 400 PM Saturday July 18\n\nIMPACTS...Ozone Action Day Alert is now in effect for the Front\nRange Urban Corridor.  Hot and sunny weather will result in\nconcentrations of ozone reaching the Unhealthy for Sensitive\nGroups category on Friday and Saturday. The highest concentrations\nare most likely in the western portions of the Denver Metro area,\nincluding the lower foothills.   For Colorado air quality\nconditions, forecasts, and advisories, visit:\nhttps://www.colorado.gov/airquality/colorado_summary.aspx   If\npossible, please help us reduce ozone pollution by limiting\ndriving gas and diesel-powered vehicles until at least 4 p.m.\nSaturday, July 18, 2026. Colorado is also addressing ozone\npollution through state policies. For more information about\nhealth impacts and how ozone pollution forms in Colorado, visit:\nhttps://cdphe.colorado.gov/ozone- pollution-and-your-health\n\nHEALTH INFORMATION...Increasing likelihood of respiratory symptoms\nand breathing discomfort in active children and adults and people\nwith lung disease, such as asthma. Active children and adults, and\npeople with lung disease, such as asthma, should reduce prolonged\nor heavy outdoor exertion."}