FLCN21 CWTO 012105 AAA
UPDATED AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY
BY ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 5:04 P.M. EDT
WEDNESDAY 1 APRIL 2026 FOR TONIGHT THURSDAY AND FRIDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 6:00 A.M. EDT THURSDAY.

TORONTO
TORONTO EAST
TORONTO NORTH
TORONTO WEST
BURLINGTON
OAKVILLE
MISSISSAUGA
BRAMPTON.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

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

WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.

CHATHAM
SARNIA
PORT STANLEY
LONDON
GRAND BEND
TIVERTON
BRANTFORD
KITCHENER
GUELPH
ST. CATHARINES
MILTON
NEWMARKET
BARRIE
PETERBOROUGH
DORSET
PARRY SOUND
CORNWALL
OTTAWA
GATINEAU
NORTH BAY
SUDBURY
SAULT STE. MARIE.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
THURSDAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
THURSDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
FRIDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

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

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