Weather & Heat-Adjusted Pace Calculator - Heat & Dew Point Physics
Slowed down in 30°C humidity? Discover what your effort equals on a crisp 12°C autumn morning using exercise thermoregulation physics.
How to Use Weather Pace Model in 3 Simple Steps
Step 1: Upload
Drag & drop your .FIT, .GPX, or .TCX activity file. All processing is 100% private in your browser.
Step 2: Process
FitCrop inspects telemetry streams, removes anomalies, recalibrates metrics, or fixes binary checksums.
Step 3: Export
Download your clean Strava, Garmin, and Zwift compatible file with 1 click. Zero server wait.
Frequently Asked Questions
How much does heat and humidity slow down running pace?
For every 3°C above 15°C, pace slows by approximately 1-2%. High dew points (>18°C) further impair evaporative sweat cooling, forcing heart rate up by 10-15 bpm for the same pace.
Does wind help as much as it hurts?
No. Aerodynamic studies prove headwinds slow a runner down more than tailwinds speed them up, creating a net aerobic time penalty on out-and-back loops.