Visibility Calculator
Estimate atmospheric visibility from humidity, precipitation rate, and particulate concentration. Provides aviation flight category and driving safety guidance.
Inputs
Results
Visibility
11.95 km
Aviation Category
VFR
How to Use This Calculator
- Enter relative humidity (%) — high humidity from fog and mist is the primary visibility reducer.
- Set precipitation rate (mm/hr) — heavier rain, snow, or freezing rain dramatically cuts visibility.
- Enter PM2.5 particulate concentration (µg/m³) for smoke, haze, or dust effects.
- Review Visibility (km), Visibility (miles), and Visibility (meters) for your conditions.
- Use Aviation Category (VFR/MVFR/IFR/LIFR) and Driving Safety rating for activity planning.
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