FLCN21 CWTO 070950 AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 6:00 A.M. EDT TUESDAY 7 APRIL 2026 FOR TODAY AND WEDNESDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 P.M. EDT. TORONTO TORONTO EAST TORONTO NORTH TORONTO WEST. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. TORONTO DOWNTOWN. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WINDSOR WINDSOR DOWNTOWN WINDSOR WEST. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. CHATHAM. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. SARNIA. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. PORT STANLEY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. LONDON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. GRAND BEND. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TIVERTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. BRANTFORD. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. KITCHENER GUELPH. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. ST. CATHARINES. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. HAMILTON HAMILTON DOWNTOWN HAMILTON MOUNTAIN HAMILTON WEST. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. BURLINGTON OAKVILLE MILTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. MISSISSAUGA BRAMPTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. OSHAWA. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. NEWMARKET. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. BARRIE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. PETERBOROUGH. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. DORSET. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. PARRY SOUND. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. BELLEVILLE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. KINGSTON. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. CORNWALL. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. OTTAWA GATINEAU. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. NORTH BAY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. SUDBURY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. SAULT STE. MARIE. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. THUNDER BAY. TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK. TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK. WEDNESDAY 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