159  
AEUS73 KIWX 312012  
AQAIWX  
 
AIR QUALITY ALERT MESSAGE  
RELAYED BY NATIONAL WEATHER SERVICE NORTHERN INDIANA  
412 PM EDT THU JUL 31 2025  
 
MIZ078>081-177-277-020815-  
CASS MI-ST. JOSEPH MI-BRANCH-HILLSDALE-NORTHERN BERRIEN-  
SOUTHERN BERRIEN-  
INCLUDING THE CITIES OF DOWAGIAC, CASSOPOLIS, EDWARDSBURG,  
MARCELLUS, STURGIS, THREE RIVERS, WHITE PIGEON, MENDON, COLDWATER,  
BRONSON, HILLSDALE, JONESVILLE, LITCHFIELD, BENTON HARBOR,  
ST. JOSEPH, PAW PAW LAKE, NILES, NEW BUFFALO, STEVENSVILLE,  
AND BERRIEN SPRINGS  
412 PM EDT THU JUL 31 2025  
   
..AIR QUALITY ALERT IN EFFECT THROUGH SATURDAY, AUGUST 2ND
 
 
THE MICHIGAN DEPARTMENT OF ENVIRONMENT, GREAT LAKES, AND ENERGY  
(EGLE) HAS ISSUED AN AIR QUALITY ADVISORY FOR ELEVATED LEVELS OF FINE  
PARTICULATE (PM2.5) ACROSS THE STATE OF MICHIGAN. POLLUTANTS ACROSS  
THE STATE ARE EXPECTED TO BE IN THE UNHEALTHY FOR SENSITIVE GROUPS  
(USG, ORANGE AQI) RANGE WITH SOME LOCATIONS REACHING THE UNHEALTHY  
(RED AQI) RANGE.  
 
THE AIR QUALITY ADVISORY INCLUDES ALL MICHIGAN COUNTIES.  
 
SMOKE FROM CANADIAN WILDFIRES REMAINS OVER THE STATE THURSDAY, WITH  
PM2.5 CONCENTRATIONS RANGING FROM USG TO UNHEALTHY. SOME LOCATIONS,  
MOSTLY IN THE LOWER PENINSULA, MAY EXPERIENCE IMPROVEMENTS IN AIR  
QUALITY FROM LATE THURSDAY INTO FRIDAY, HOWEVER, THAT IS EXPECTED TO  
BE SHORT-LIVED AS ADDITIONAL SMOKE PLUMES DROP INTO THE REGION. HIGH  
PRESSURE SETTLING OVERHEAD WILL LIMIT DISPERSION AND KEEP SMOKE AT  
THE SURFACE THROUGH THE END OF THE WEEK. THIS SUSTAINS THE THREAT OF  
INCREASED PM2.5 AND READINGS IN THE USG RANGE WILL CONTINUE THROUGH  
SATURDAY, WITH SOME LOCATIONS REACHING THE UNHEALTHY RANGE.  
 
IT IS RECOMMENDED THAT, WHEN POSSIBLE, YOU AVOID STRENUOUS OUTDOOR  
ACTIVITIES, ESPECIALLY THOSE WITH HEART DISEASE AND RESPIRATORY  
DISEASES LIKE ASTHMA. MONITOR FOR SYMPTOMS SUCH AS WHEEZING,  
COUGHING, CHEST TIGHTNESS, DIZZINESS, OR BURNING IN NOSE, THROAT,  
AND EYES.  
 
REDUCE OR ELIMINATE ACTIVITIES THAT CONTRIBUTE TO AIR POLLUTION,  
SUCH AS:  
* OUTDOOR BURNING,  
* USE OF RESIDENTIAL WOOD BURNING DEVICES.  
 
TIPS FOR HOUSEHOLDS: KEEP WINDOWS CLOSED OVERNIGHT TO PREVENT SMOKE  
FROM GETTING INDOORS AND, IF POSSIBLE, RUN CENTRAL AIR CONDITIONING  
WITH MERV-13 OR HIGHER RATED FILTERS.  
 
FOR UP-TO-DATE AIR QUALITY DATA FOR MICHIGAN VISIT THE MIAIR SITE:  
HTTPS://AIR-EGLE.HUB.ARCGIS.COM/  
 
FOR UP-TO-DATE AIR QUALITY DATA NATIONALLY VISIT EPA'S AIR NOW SITE:  
HTTPS://WWW.AIRNOW.GOV/  
 
FOR FURTHER HEALTH INFORMATION, PLEASE SEE MDHHS'S WILDFIRE SMOKE  
AND YOU HEALTH SITE:  
HTTPS://WWW.MICHIGAN.GOV/MDHHS/SAFETY-INJURY-PREV/ENVIRONMENTAL-  
HEALTH/YOUR-HEALTH-AND-WILDFIRE-SMOKE  
 

 
 
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