Air Quality Alert
Issued by NWS St. Louis, MO

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
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