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Home > Weather and Earthquakes > UV Index

UV Index: Japan

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UV Index Forecast:
UV index for forecast cloudiness. UV Index Forecasts indicate the expected strength of ultraviolet (UV) radiation based on weather forecasts. The UV Index Forecast for today and tomorrow has a spatial resolution of 20 km and is updated at around 6:00 and 18:00 JST every day.

Clear Sky UV Index Forecast:
UV index for clear-sky conditions. Clear Sky UV Index Forecasts indicate the expected strength of UV radiation based on clear-sky conditions. The Clear Sky UV Index Forecast for today and tomorrow has a spatial resolution of 20 km and is updated at around 6:00 JST every day.

UV Index Estimate:
UV index estimate based on today's or yesterday's weather. UV Index Estimates indicate the estimated UV Index based on weather observation data for the day. The UV Index Estimate has a spatial resolution of 20 km and is updated at around 18:00 JST every day.