Question 1

Where does the weather data come from?

Accepted Answer

All weather data is sourced from the Korea Meteorological Administration (KMA) official short-term forecast API, available through the Korean public data portal (data.go.kr).

Question 2

How accurate is the forecast?

Accepted Answer

The KMA short-term forecast updates 8 times per day (02:00, 05:00, 08:00, 11:00, 14:00, 17:00, 20:00, 23:00 KST). For Korean locations, it provides higher regional accuracy than global weather APIs.

Question 3

What regions are supported?

Accepted Answer

Major Korean cities are preset (Seoul, Busan, Daegu, Incheon, Gwangju, Daejeon, Ulsan, Sejong, Suwon, Gangneung, Jeju, and more). The API uses KMA's Lambert Conformal Conic grid system (nx, ny).

Question 4

What is the 강수확률 (precipitation probability)?

Accepted Answer

The precip_prob value (0-100%) represents the statistical likelihood of precipitation at that forecast hour based on atmospheric conditions.

날씨 (기상청 공식)

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