FLCN21 CWTO 202045
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 5:00 P.M. EDT
FRIDAY 20 MARCH 2026 FOR TONIGHT SATURDAY AND SUNDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 6:00 A.M. EDT SATURDAY.

TORONTO
TORONTO EAST
TORONTO NORTH
TORONTO WEST
MISSISSAUGA
BRAMPTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.

TORONTO DOWNTOWN.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 6 OR MODERATE RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST
SARNIA.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

CHATHAM
PORT STANLEY
LONDON
BRANTFORD
KITCHENER
GUELPH
ST. CATHARINES
BURLINGTON
OAKVILLE
MILTON
OSHAWA
NEWMARKET
BARRIE.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

GRAND BEND.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

TIVERTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

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

DORSET
PARRY SOUND
NORTH BAY
SUDBURY
SAULT STE. MARIE.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

CORNWALL
OTTAWA
GATINEAU.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

THUNDER BAY.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SATURDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY..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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