1km Mesh Current Weather

GET

/api/v1/ss1wx/obs

Current Japan

Receive current weather conditions for specified latitude and longitude coordinates, calculated with 1km grid resolution.

See Weather Codes (Observation) for weather codes and icons.
For wind direction definitions, refer to Wind Direction Definitions.

Data Update Times

Updated every 10 minutes.

Data Coverage

Land areas of Japan

Parameters

Query Parameters

lat*

Latitude

Typenumber

Required

Example35.651377

formatfloat

lon*

Longitude

Typenumber

Required

Example140.041161

formatfloat

Responses

1km grid-based current weather data

Content-Type

application/json

{

"requestId": "3909775c-5d0f-4e96-8e4f-7d3f263e2056",

"wxdata": [

{

"lat": 35.651377,

"lon": 140.041161,

"obs": {

"date": "2025-04-09T10:00:00+09:00",

"wx": 100,

"temp": 22,

"prec": 0,

"arpress": 1011,

"wndspd": 0,

"wnddir": 0,

"rhum": 43

}

}

]

}

GET

/api/v1/ss1wx/obs

Playground

Authorization

X-API-Key

Variables

Key

Value

lat*

lon*

Samples

cURL

JavaScript

PHP

Python