FLCN21 CWTO 031045
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 6:00 A.M. EST
TUESDAY 3 MARCH 2026 FOR TODAY AND WEDNESDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 P.M. EST.

TORONTO
TORONTO EAST
MISSISSAUGA
BRAMPTON.
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 5 OR MODERATE RISK.

TORONTO DOWNTOWN
TORONTO WEST.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 5 OR MODERATE RISK.
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 5 OR MODERATE RISK.

TORONTO NORTH.
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 4 OR MODERATE RISK.

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST
CHATHAM
SARNIA
PORT STANLEY
LONDON
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
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 4 OR MODERATE RISK.

ST. CATHARINES.
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.

HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE 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 4 OR MODERATE RISK.

BURLINGTON
OAKVILLE.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE 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 4 OR MODERATE RISK.

OSHAWA
NEWMARKET
BARRIE
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
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
KINGSTON
CORNWALL.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE 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 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.

NORTH BAY
SUDBURY
THUNDER BAY.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE 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.

SAULT STE. MARIE.
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.

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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