Wind Chill Index
2001 wind-chill index (JAG/TI): perceived temperature from air temperature (C) and wind speed (km/h).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Air temperature
- -10 C
- Wind speed
- 30 km/h
Result: Wind chill -19.5 C — lower frostbite risk (> -27 C).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- > -27 C
- Lower frostbite risk.
- <= -27 C
- High frostbite risk (exposed skin in ~30 min; <= -48 C in < 5 min). A perceived-temperature value, not a diagnosis.
What you enter
- Air temperature
- Wind speed
How this is calculated
Environment Canada / US National Weather Service. New wind chill index (JAG/TI). 2001. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.