282  
AEUS73 KABR 122145  
AQAABR  
 
AIR QUALITY ALERT MESSAGE  
MINNESOTA POLLUTION CONTROL AGENCY  
RELAYED BY NATIONAL WEATHER SERVICE ABERDEEN SD  
445 PM CDT MON MAY 12 2025  
 
MNZ039-046-140200-  
BIG STONE-TRAVERSE-  
INCLUDING THE CITY OF ORTONVILLE  
445 PM CDT MON MAY 12 2025  
   
..AIR QUALITY ALERT IN EFFECT FROM NOON CDT TO 9 PM CDT TUESDAY
 
 
 
* WHAT...THE MINNESOTA POLLUTION CONTROL AGENCY HAS ISSUED AN AIR  
QUALITY ALERT FOR OZONE POLLUTION. THE AIR QUALITY INDEX (AQI) IS  
EXPECTED TO REACH THE ORANGE OR UNHEALTHY FOR SENSITIVE GROUPS  
CATEGORY.  
 
* WHERE...WEST CENTRAL, EAST CENTRAL, CENTRAL, SOUTH CENTRAL,  
SOUTHWEST, NORTH CENTRAL, AND NORTHWEST MINNESOTA.  
 
* WHEN...FROM NOON CDT TO 9 PM CDT TUESDAY.  
 
* IMPACTS...SENSITIVE GROUPS, SUCH AS PEOPLE WITH LUNG DISEASE  
(INCLUDING ASTHMA), HEART DISEASE, CHILDREN AND OLDER ADULTS, AND  
PEOPLE WHO ARE ACTIVE OUTDOORS, MAY EXPERIENCE HEALTH EFFECTS.  
 
* ADDITIONAL DETAILS...GROUND-LEVEL OZONE IS EXPECTED TO BE HIGH ONCE  
AGAIN DURING THE AFTERNOON HOURS ON TUESDAY ACROSS ROUGHLY THE  
WESTERN TWO-THIRDS OF MINNESOTA, INCLUDING THE TWIN CITIES METRO.  
MOSTLY SUNNY SKIES, WARM TEMPERATURES AND LOW HUMIDITY WILL PROVIDE A  
FAVORABLE ENVIRONMENT FOR TWO TYPES OF POLLUTANTS (VOLATILE ORGANIC  
COMPOUNDS AND NITROGEN OXIDES) TO REACT WITH SUNLIGHT IN THE AIR TO  
PRODUCE GROUND-LEVEL OZONE. OZONE WILL REMAIN ELEVATED ON WEDNESDAY  
AS SUNNY SKIES, WARM TEMPERATURES AND DRY CONDITIONS PERSIST.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SENSITIVE GROUPS, SUCH AS PEOPLE WITH LUNG DISEASE (INCLUDING  
ASTHMA), HEART DISEASE, CHILDREN AND OLDER ADULTS, AND PEOPLE WHO ARE  
ACTIVE OUTDOORS, SHOULD LIMIT PROLONGED OR HEAVY OUTDOOR EXERTION.  
 
REDUCE OR ELIMINATE ACTIVITIES THAT CONTRIBUTE TO AIR POLLUTION, SUCH  
AS OUTDOOR BURNING, AND USE OF RESIDENTIAL WOOD BURNING DEVICES.  
REDUCE VEHICLE TRIPS AND VEHICLE IDLING AS MUCH AS POSSIBLE.  
 

 
 
FOR INFORMATION ON CURRENT AIR QUALITY CONDITIONS IN YOUR AREA AND TO  
SIGN UP FOR DAILY AIR QUALITY FORECASTS AND ALERT NOTIFICATIONS BY  
EMAIL, TEXT MESSAGE, PHONE, OR THE EPA AIRNOW MOBILE APP, VISIT  
HTTPS://WWW.PCA.STATE.MN.US/AIR-WATER-LAND-CLIMATE/CURRENT-AIR-  
QUALITY-CONDITIONS. YOU CAN FIND ADDITIONAL INFORMATION ABOUT HEALTH  
AND AIR QUALITY AT HTTPS://WWW.PCA.STATE.MN.US/AIR-WATER-LAND-  
CLIMATE/AIR-QUALITY-AND-HEALTH.  
 

 
 
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