🌡️ Heat Index Calculator

Calculate the apparent temperature (heat index) and get heat safety recommendations

Weather Conditions

Temperature Unit

°C °F

Temperature

°C

Relative Humidity (%)

✅

Heat Index (Apparent Temperature)

Safe

Normal conditions. Stay comfortable and hydrated.

Actual Temperature

Humidity

Heat Index

Risk Level

✅ Stay hydrated, drink water regularly

✅ Wear light-colored, loose-fitting clothing

✅ Limit outdoor activity during peak heat

Safe ≤ 26°C

Caution 27-32°C

Extreme Caution 33-40°C

Danger 41-53°C

Extreme Danger ≥ 54°C

🌡️ Heat Index

What temperature feels like

💧 Humidity

Higher humidity = higher heat index

☀️ Sun Exposure

Sun adds 5-10°F to heat index

🏥 Heat Illnesses

Cramps → Exhaustion → Stroke