FLCN21 CWTO 180945
AIR QUALITY HEALTH INDEX FORECAST FOR ONTARIO ISSUED JOINTLY BY
ENVIRONMENT CANADA AND THE PROVINCE OF ONTARIO AT 6:00 A.M. EDT
SATURDAY 18 APRIL 2026 FOR TODAY AND SUNDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 P.M. EDT.

TORONTO
TORONTO EAST
TORONTO NORTH
TORONTO WEST
WINDSOR
WINDSOR DOWNTOWN
WINDSOR WEST
CHATHAM
SARNIA
PORT STANLEY
LONDON
GRAND BEND
TIVERTON
BRANTFORD
KITCHENER
GUELPH
ST. CATHARINES
HAMILTON
HAMILTON DOWNTOWN
HAMILTON MOUNTAIN
HAMILTON WEST
BURLINGTON
OAKVILLE
MILTON
MISSISSAUGA
BRAMPTON
OSHAWA
NEWMARKET
BARRIE
PETERBOROUGH
BELLEVILLE.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
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.

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

DORSET
PARRY SOUND
KINGSTON
CORNWALL
OTTAWA
GATINEAU
NORTH BAY
SUDBURY
SAULT STE. MARIE.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
TONIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 3 OR LOW RISK.
SUNDAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
SUNDAY NIGHT..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.

THUNDER BAY.
TODAY..MAXIMUM AIR QUALITY HEALTH INDEX 2 OR LOW RISK.
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.

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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