1km Mesh Yellow Dust Index
GET
/api/v1/kousa
Get yellow dust index for specified latitude and longitude coordinates, calculated with 1km grid resolution. The specified latitude and longitude must be within Japan. The yellow dust index includes hourly information for 60 hours. The yellow dust index is provided year-round.
Index Codes
| Code | Description |
|---|---|
| 1 | Low |
| 2 | Moderate |
| 3 | High |
Forecast Update Times
- 3:00 AM
- 3:00 PM
Note: Manual updates may occur at times other than the above.
Parameters
Query Parameters
lat*
Latitude
Typenumber
RequiredExample
35.651377format
floatlon*
Longitude
Typenumber
RequiredExample
140.041161format
floatResponses
1km grid-based yellow dust index data
application/json
JSON
{
"requestId": "3909775c-5d0f-4e96-8e4f-7d3f263e2056",
"wxdata": [
{
"lat": 35.651377,
"lon": 140.041161,
"data": [
{
"date": "2025-04-09T10:00:00+09:00",
"kousa": 4,
"kousaidx": 1
}
]
}
]
}