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Low

extreme-heat Extreme Heat Risk in Toronto, Canada

Risk Level: Low — Score 1/10

Risk: 1Historical: 10

Key Risk Factors

  • 50 events recorded in proximity in recent decades
  • Active in the last 12 months (20 events)

Peak season: June-September

Last significant event: Frost - Toronto, Ontario, Canada (2026-04-30) — 9,671,010 people exposed

Highest Risk Cities for Extreme Heats

1
Chicago, IL
FEMA: 9Historical: 10
2
Houston, TX
FEMA: 9Historical: 10
3
Phoenix, AZ
FEMA: 9Historical: 10
4
Philadelphia, PA
FEMA: 9Historical: 10
5
Dallas, TX
FEMA: 9Historical: 10
6
Las Vegas, NV
FEMA: 9Historical: 10
7
Tucson, AZ
FEMA: 9Historical: 10
8
Mesa, AZ
FEMA: 9Historical: 10
9
Mumbai, India
Risk: 9Historical: 10
10
Shanghai, China
Risk: 9Historical: 10
Toronto is not in the top 10 for extreme heat risk among tracked cities.

How Toronto Compares

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Notable Extreme Heat Events Near Toronto

Heat - Toronto, Ontario, Canada

July 28, 2025 — WARNING

Impact data not available

Extreme Heat - Toronto, Ontario, Canada

July 6, 2024 — WARNING

7,799,600 people exposed; $1,417,400M capital exposed

Heat - Toronto, Ontario, Canada

July 22, 2025 — WARNING

Impact data not available

Frost - Toronto, Ontario, Canada

April 29, 2026 — ADVISORY

9,671,010 people exposed; $1,754,133M capital exposed

Heat - Toronto, Ontario, Canada

August 7, 2025 — WARNING

115,000 people exposed; $21,466M capital exposed

Extreme Heat Preparedness Tips

  • 1.Stay hydrated — drink water regularly even if you don’t feel thirsty
  • 2.Avoid outdoor activities during peak heat hours (10 AM – 4 PM)
  • 3.Know the signs of heat exhaustion and heat stroke
  • 4.Check on elderly neighbors and those without air conditioning
  • 5.Never leave children or pets in a parked vehicle

Related Pages

earthquake
Earthquake Risk in Toronto
Score: 1/10
wildfire
Wildfire Risk in Toronto
Score: 1/10
hurricane
Hurricane Risk in Toronto
Score: 0/10
flood
Flood Risk in Toronto
Score: 1/10
tornado
Tornado Risk in Toronto
Score: 0/10
winter-storm
Winter Storm Risk in Toronto
Score: 0/10
landslide
Landslide Risk in Toronto
Score: 3/10
drought
Drought Risk in Toronto
Score: 0/10
high-wind
High Wind Risk in Toronto
Score: 0/10
tsunami
Tsunami Risk in Toronto
Score: 3/10
extreme-heat
Extreme Heat Risk in Columbus, OH
Score: 7/10
extreme-heat
Extreme Heat Risk in Baltimore, MD
Score: 7/10
extreme-heat
Extreme Heat Risk in Philadelphia, PA
Score: 9/10

How this data is built

Toronto, Canada extreme heat risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live extreme heat monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

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