tenki.jp

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Japan's official weather portal operated by Japan Meteorological Association, providing accurate weather forecasts, pollen counts, UV indexes, and disaster alerts for all cities and regions across Japan.

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GET/api/v1/forecast

Get weather forecast for Japanese city

Parameters

days3|7|14 (integeroptional

area_codeprefecture code (stringrequired

Returns

forecasts[{date, weather, max_temp, min_temp, precipitation_probability, wind_speed, humidity}]

GET/api/v1/current

Get current weather conditions

Parameters

area_codestringrequired

Returns

current{temp, humidity, wind_direction, wind_speed, pressure, weather_condition, last_updated}

GET/api/v1/pollen

Get pollen forecast for cedar and cypress

Parameters

typesugi|hinoki (stringoptional

area_codestringrequired

Returns

pollen{area, level, forecast_days[{date, level, description}]}