FLCN21 CWTO 122045
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 5:00 P.M. EDT
THURSDAY 12 MARCH 2026 FOR TONIGHT FRIDAY AND SATURDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 6:00 A.M. EDT FRIDAY.

TORONTO
TORONTO EAST
TORONTO NORTH
TORONTO WEST
BRANTFORD
ST. CATHARINES
HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST
BURLINGTON
OAKVILLE
MILTON
MISSISSAUGA
BRAMPTON
OSHAWA
NEWMARKET.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

TORONTO DOWNTOWN.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

CHATHAM
SARNIA
PORT STANLEY
LONDON
GRAND BEND
KITCHENER
GUELPH.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

TIVERTON
BARRIE
DORSET
PARRY SOUND.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

PETERBOROUGH
BELLEVILLE
KINGSTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

CORNWALL
OTTAWA
GATINEAU.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

NORTH BAY
SUDBURY
SAULT STE. MARIE.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

THUNDER BAY.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY..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

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