15km Mesh PM2.5 Index
GET
/api/v1/pm25
Get PM2.5 air quality index for specified latitude and longitude coordinates, calculated with 15km grid resolution. The specified latitude and longitude must be within Japan. The PM2.5 index includes hourly information for approximately 2 days.
Parameters
Query Parameters
lat*
Latitude
Typenumber
RequiredExample
35.651377format
floatlon*
Longitude
Typenumber
RequiredExample
140.041161format
floatResponses
15km grid-based PM2.5 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",
"pm25": 0.3,
"pm25idx": 1
}
]
}
]
}