FLCN21 CWTO 130945 AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 6:00 A.M. EDT WEDNESDAY 13 MAY 2026 FOR TODAY AND THURSDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 P.M. EDT. TORONTO. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TORONTO DOWNTOWN. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TORONTO EAST. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TORONTO NORTH TORONTO WEST CHATHAM SARNIA LONDON GRAND BEND TIVERTON BRANTFORD KITCHENER GUELPH HAMILTON HAMILTON DOWNTOWN HAMILTON MOUNTAIN HAMILTON WEST MILTON NEWMARKET BARRIE DORSET OTTAWA GATINEAU SUDBURY SAULT STE. MARIE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WINDSOR. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WINDSOR DOWNTOWN. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WINDSOR WEST. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. PORT STANLEY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. ST. CATHARINES. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. BURLINGTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. OAKVILLE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. MISSISSAUGA. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. BRAMPTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. OSHAWA. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. PETERBOROUGH. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. PARRY SOUND. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. BELLEVILLE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. KINGSTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. CORNWALL. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. NORTH BAY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THUNDER BAY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. AIR QUALITY HEALTH INDEX SCALE: 1-3 LOW HEALTH RISK 4-6 MODERATE HEALTH RISK 7-10 HIGH HEALTH RISK ABOVE 10 VERY HIGH HEALTH RISK FOR MORE INFORMATION, CONSULT WWW.AIRHEALTH.CA END