FLCN21 CWTO 212045
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 5:00 P.M. EDT
SATURDAY 21 MARCH 2026 FOR TONIGHT SUNDAY AND MONDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 6:00 A.M. EDT SUNDAY.

TORONTO
TORONTO DOWNTOWN
TORONTO EAST
TORONTO NORTH
TORONTO WEST.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 4 OR MODERATE RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
MONDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST
HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST
BURLINGTON
OAKVILLE
MISSISSAUGA
BRAMPTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
MONDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

CHATHAM
PORT STANLEY
BRANTFORD
MILTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
MONDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

SARNIA
LONDON
GRAND BEND
TIVERTON
KITCHENER
GUELPH
ST. CATHARINES
OSHAWA
NEWMARKET
BELLEVILLE
KINGSTON
CORNWALL.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
MONDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

BARRIE
PETERBOROUGH
DORSET
PARRY SOUND
OTTAWA
GATINEAU
NORTH BAY
SUDBURY
SAULT STE. MARIE
THUNDER BAY.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
MONDAY..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