Japan Heat Stress (WBGT)

Ministry of the Environment WBGT heat-stress forecasts for Japan — station search for your AI agent.

For construction, sports, schools and H&S teams in Japan. Free: sample stations. Pro: search and hottest list.

Tools

• wbgt_sample (free) — FREE. Heat-stress (WBGT) forecast sample — first 5 stations from MoE Japan.
• wbgt_search (Pro) — PRO. Find WBGT rows by prefecture or station name substring (up to 50).
• hottest (Pro) — PRO. Stations with highest next WBGT value.

Live free example

wbgt_sample {}

{
  "times": [
    "2026101703",
    "2026101706",
    "2026101709",
    "2026101712",
    "2026101715",
    "2026101718"
  ],
  "sample": [
    {
      "station": "11001",
      "pref": "2026/10/17 02:25",
      "values": [
        60,
        60,
        90,
        100,
        70,
        60,
        50,
        60,
        60,
        60,
        90,
        120,
        100,
        80,
        70,
        80,
        70,
        80,
        140,
        170,
        130,
        110,
        90,
        80
      ]
    },
    {
      "station": "11016",
      "pref": "2026/10/17 02:25",
      "values": [
        60,
        70,
        100,
        90,
        70,
        60,
        60,
        70,
        60,
        60,
        100,
        110,
        120,
        100,
        90,
        90,
        90,
        100,
        160,
        160,
        140,
        110,
        90,
        90
      ]
    },
    {
      "station": "11046",
      "pref": "2026/10/17 02:25",
      "values": [
        50,
        60,
        90,
        100,
        70,
        50,
        50,
        60,
        60,
        60,
        90,
        110,
        100,
        120,
        110,
        110,
        130,
        140,
        170,
        150,
        140,
        100,
        90,
        80
      ]
    },
    {
      "station": "11076",
      "pref": "2026/10/17 02:25",
      "values": [
        50,
        30,
        90,
        80,
        60,
        40,
        20,
        20,
        30,
        10,
        80,
        100,
        110,
        80,
        70,
        80,
        80,
        80,
        140,
        170,
        120,
        100,
        80,
        70
      ]
    },
    {
      "station": "11121",
      "pref": "2026/10/17 02:25",
      "values": [
        40,
        40,
        90,
        100,
        70,
        40,
        20,
        0,
        0,
        10,
        90,
        120,
        110,
        70,
        50,
        50,
        60,
        90,
        160,
        170,
        130,
        100,
        60,
        30
      ]
    }
  ],
  "station_count": 841,
  "pro": "Search by prefecture/station and hottest stations: https://jp-heat-stress-mcp.donniertf.workers.dev/buy",
  "disclaimer": "WBGT (wet-bulb globe temperature) heat-stress forecasts from the Japanese Ministry of the Environment. Values are WBGT °C guidance bands."
}

Connect (MCP)

Add https://jp-heat-stress-mcp.donniertf.workers.dev/mcp to Claude, Cursor or any MCP client (Streamable HTTP, no login for the free tier). Subscribers pass access_token or Authorization: Bearer.

Important

WBGT (wet-bulb globe temperature) heat-stress forecasts from the Japanese Ministry of the Environment. Values are WBGT °C guidance bands.

Data sources & licences

• Ministry of the Environment Japan WBGT forecast CSV (https://www.wbgt.env.go.jp/)

For AI agents

llms.txt · server card · pricing.json · POST /checkout → checkout URL · GET /token?session_id= → access token.

More Japan data MCPs

Save with Japan bundles: jp-mcp-bundles · GitHub hub.

Contact & cancelling

Questions, refunds or cancelling: dmorrisonwebdesign@gmail.com. Run by Donnie Morrison, UK. Payments by Stripe; we never see card details.