FLCN21 CWTO 032145
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 5:00 P.M. EST
TUESDAY 3 MARCH 2026 FOR TONIGHT WEDNESDAY AND THURSDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 6:00 A.M. EST
WEDNESDAY.

TORONTO
TORONTO EAST
TORONTO NORTH
TORONTO WEST
MISSISSAUGA
BRAMPTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 5 OR MODERATE RISK.
WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 5 OR MODERATE RISK.
WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.

TORONTO DOWNTOWN.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 6 OR MODERATE RISK.
WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 6 OR MODERATE RISK.
WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 5 OR MODERATE RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST
CHATHAM
SARNIA
PORT STANLEY
LONDON
GRAND BEND
TIVERTON
BRANTFORD
KITCHENER
BARRIE
PETERBOROUGH
BELLEVILLE
KINGSTON
CORNWALL
OTTAWA
GATINEAU.
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.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

GUELPH
HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST
BURLINGTON
OAKVILLE
MILTON.
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.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

ST. CATHARINES.
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.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

OSHAWA
NEWMARKET.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

DORSET
PARRY SOUND
NORTH BAY
SUDBURY
SAULT STE. MARIE.
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.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

THUNDER BAY.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
WEDNESDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
WEDNESDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
THURSDAY..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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