Japanese

UV Index

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Click on an area of interest and then click a black circle on the map above to see a UV Index chart for the site.


UV Index Forecast:
UV index incorporating 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 is updated at around 6:00 and 18:00 JST every day.

Clear Sky UV Index Forecast:
UV index under 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 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 is updated at around 18:00 JST every day.

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