


Air Quality Alert
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
Versions:
1
719 AEUS73 KLSX 311954 AQALSX Air Quality Alert Message Relayed by National Weather Service St Louis MO 254 PM CDT Thu Jul 31 2025 ILZ058>060-064-065-069-070-074-079-095>102-020500- Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL- Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL- Including the cities of Litchfield, Vandalia, Centralia, Salem, Chester, Sparta, Quincy, Mount Sterling, Pittsfield, Alton, Edwardsville, Belleville, and Cahokia 254 PM CDT Thu Jul 31 2025 ...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT FRIDAY NIGHT... The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for August 1st for all of Illinois due to wildfire smoke. An Illinois "Air Pollution Action Day" is declared when weather conditions are such that widespread ozone and or particulate levels are expected to be at or above the Unhealthy for Sensitive Groups (USG) category of the Air Quality Index for all or almost all of Illinois. USG - Active children and adults especially people with pulmonary or respiratory disease such as asthma should limit prolonged outdoor activity. Unhealthy - Everyone should reduce prolonged activities or heavy exertion outdoors. Active children, older adults, and people with pulmonary or respiratory disease such as asthma should avoid prolonged activities or heavy exertion outdoors. Area residents are urged to reduce pollution levels. Air quality forecasts, AQI cautionary statements, current air quality, and tips on how you can reduce your emissions can be found at www.airnow.gov $$ MOZ061>065-020500- Saint Charles MO-Franklin MO-Saint Louis MO-Saint Louis City MO- Jefferson MO- Including the cities of Saint Charles, Washington, Union, Sullivan, and Saint Louis 254 PM CDT Thu Jul 31 2025 ...AIR QUALITY ALERT IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CDT FRIDAY NIGHT... The St. Louis Clean Air Partnership has issued an air quality alert for the St. Louis metropolitan area from midnight tonight to midnight CDT Friday night. An Orange air quality forecast means that maximum fine particulates concentrations are expected to reach levels that pose a health risk. Adverse health effects increase as air quality deteriorates. Ground- level fine particulates is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. Reducing outdoor physical activity is recommended. If it is a regularly scheduled work day you are urged to consider telecommuting, carpooling, or utilizing public transit. Avoid excessive idling and do not top off when refueling motor vehicles. The use of gasoline-powered lawn equipment should be reduced or postponed until late in the day. For more information visit the St. Louis Clean Air Partnership at http://cleanair-stlouis.com/ For current Air Quality Index (AQI) values visit https://www.airnow.gov/ $$ Gosselin