Hot Car Calculator
Calculate dangerous interior temperatures and child safety risks in parked vehicles
Calculate Hot Car Temperature
Most accurate for temperatures 20-50°C (68-122°F)
How long the car has been parked in the heat
Note: Partly open windows provide minimal safety improvement
Temperature Results
Car Interior Temperature
Child Body Temperature
MEDICAL EMERGENCY
Life-threatening hyperthermia. Call emergency services immediately!
Safety Analysis
Maximum interior temperature: 65.0°C (149.0°F) after 3+ hours
Real-World Examples
Mild Day Danger
Outside: 23°C (73°F) - Pleasant weather
After 1 hour: Interior reaches 48°C (118°F)
Risk: High hyperthermia risk for children
Hot Summer Day
Outside: 32°C (90°F) - Warm summer day
After 30 min: Interior reaches 55°C (131°F)
Risk: Life-threatening within minutes
Key Fact: Children die in hot cars even on 70°F (21°C) days. A child's body temperature can rise 3-5x faster than an adult's.
Emergency Actions
Call 911 Immediately
Don't wait - call emergency services first
Get Child Out
Break window if necessary (Good Samaritan laws protect you)
Cool Immediately
Use cool water, air conditioning, fan
Monitor Until Help Arrives
Check breathing, consciousness
Prevention Tips
Never leave children or pets in cars, even for "just a minute"
Put something important (phone, wallet) in back seat
Set reminders on your phone
Ask daycare to call if child doesn't arrive
Keep car doors locked so children can't enter
Critical Statistics
Understanding Hot Car Dangers
Why Cars Get So Hot
Cars experience a greenhouse effect similar to global warming. Sunlight passes through windows (short wavelengths) and heats interior surfaces. These surfaces then emit heat as longer wavelengths that can't escape through glass, trapping heat inside.
Why Children Are Vulnerable
- •Body temperature rises 3-5x faster than adults
- •Higher surface area to body mass ratio
- •Less efficient sweating mechanism
- •Smaller blood volume for heat transfer
Heat Illness Progression
Heat Exhaustion
Heavy sweating, weakness, nausea
Heatstroke
High body temp, altered mental state, hot dry skin
Hyperthermia (>40°C/104°F)
Organ failure, death within hours
⚠️ Medical Disclaimer
This calculator provides estimates for educational purposes. Actual conditions vary. Never leave children or pets in cars. Seek immediate medical attention for heat-related illness.