Weather Bot - Alert Monitor

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "Weather Bot - Alert Monitor",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes",
              "minutesInterval": 30
            }
          ]
        }
      },
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.2,
      "position": [
        -500,
        -20
      ],
      "id": "0480dcfd-592d-41a2-8105-0efdaa8cafe9",
      "name": "Schedule Trigger"
    },
    {
      "parameters": {
        "authentication": "serviceAccount",
        "documentId": {
          "__rl": true,
          "value": "1TI7vysDQJULYNJmFvJtpTBBnUQV50HKs75a3bI91ZVo",
          "mode": "id"
        },
        "sheetName": {
          "__rl": true,
          "value": "gid=0",
          "mode": "list",
          "cachedResultName": "Users",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1TI7vysDQJULYNJmFvJtpTBBnUQV50HKs75a3bI91ZVo/edit#gid=0"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.6,
      "position": [
        -280,
        -20
      ],
      "id": "23c90828-e3dc-4035-af62-1db277522686",
      "name": "Get All Users",
      "credentials": {
        "googleApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "// Get ALL input items from the previous node.\n// This gives you an array of n8n item objects (e.g., [{ json: {...} }, { json: {...} }])\nconst allInputItems = $input.all();\n\n// Map these n8n item objects to extract their 'json' payload,\n// resulting in a clean array of your user data objects.\n// This ensures 'users' is always an array, whether there's 1, 3, or 0 input items.\nconst users = allInputItems.map(item => item.json);\n\n// Filter the users based on the conditions\nconst activeUsers = users.filter(user =>\n  user.location && user.lat && user.lon\n);\n\n// Map the filtered activeUsers to the desired output format\nreturn activeUsers.map(user => ({\n  json: {\n    userId: user.user_id,\n    location: user.location,\n    lat: user.lat,\n    lon: user.lon,\n    chatId: user.user_id // Assuming user_id is the correct chatId\n  }\n}));"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -60,
        -20
      ],
      "id": "55edc8b3-546f-448f-97bf-577a5d9e4925",
      "name": "Filter Active Users"
    },
    {
      "parameters": {
        "url": "https://api.openweathermap.org/data/2.5/weather",
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "lat",
              "value": "={{ $json.lat }}"
            },
            {
              "name": "lon",
              "value": "={{ $json.lon }}"
            },
            {
              "name": "appid",
              "value": "[your weather API]"
            },
            {
              "name": "units",
              "value": "metric"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        460,
        20
      ],
      "id": "f3668a07-9d2b-4b40-b232-dde7eee9170f",
      "name": "Weather Alerts API"
    },
    {
      "parameters": {
        "mode": "combine",
        "combineBy": "combineByPosition",
        "options": {}
      },
      "type": "n8n-nodes-base.merge",
      "typeVersion": 3.1,
      "position": [
        720,
        -160
      ],
      "id": "af6e8102-65d0-48c0-a17b-b795847ba93d",
      "name": "Merge"
    },
    {
      "parameters": {
        "jsCode": "// Get ALL input items from the previous node.\n// Each item will be an n8n item object, containing the weather data and user details\nconst inputItems = $input.all();\n\n// You need to map each input item to an output item.\n// This ensures each weather data block is processed independently.\nreturn inputItems.map(item => {\n  // Extract the actual weather data object and user details for the current item\n  const weather = item.json;\n  const locationName = item.json.location || weather.name || 'Your Location'; // Prioritize passed-through location, fallback to weather.name\n\n  // This variable correctly holds the userId (which you're using as chatId) for the CURRENT item\n  const userIdForChat = item.json.userId || ''; // Or item.json.chatId if that's the field name\n\n\n  // Safely access weather properties\n  const temp = weather.main?.temp;\n  const windSpeed = (weather.wind?.speed || 0) * 3.6; // m/s to km/h, default 0\n  const condition = weather.weather[0]?.main;\n  const description = weather.weather[0]?.description;\n\n  let alerts = [];\n\n  // Temperature alerts\n  if (temp !== undefined) {\n    if (temp < -5) {\n      alerts.push('\ud83e\udd76 Extreme Cold Warning: Temperature below -5\u00b0C');\n    }\n    if (temp > 35) {\n      alerts.push('\ud83d\udd25 Heat Warning: Temperature above 35\u00b0C');\n    }\n  }\n\n  // Wind alerts\n  if (windSpeed > 50) {\n    alerts.push('\ud83d\udca8 High Wind Warning: Wind speed above 50 km/h');\n  }\n\n  // Weather condition alerts\n  if (condition === 'Thunderstorm') {\n    alerts.push('\u26c8\ufe0f Thunderstorm Alert: Take shelter indoors');\n  }\n  if (condition === 'Snow') {\n    alerts.push('\u2744\ufe0f Snow Alert: Drive carefully and dress warmly');\n  }\n\n  // If no alerts, return null for this item\n  if (alerts.length === 0) {\n    return null;\n  }\n\n  const message = `\u26a0\ufe0f WEATHER ALERT for ${locationName}\n\n${alerts.join('\\n')}\n\nCurrent conditions: ${Math.round(temp || 0)}\u00b0C, ${description || 'N/A'}\n\nStay safe! \ud83d\ude4f`;\n\n  // Return a new n8n item for each processed weather data that generated an alert\n  return {\n    json: {\n      // FIX: Use the userIdForChat variable which is specific to the current item\n      chatId: userIdForChat,\n      message: message\n    }\n  };\n}).filter(Boolean); // .filter(Boolean) will remove any null items from the array"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        1040,
        -20
      ],
      "id": "bf0887c0-efbf-4deb-b4b6-65b187894d6d",
      "name": "Check Alert Conditions",
      "alwaysOutputData": false
    },
    {
      "parameters": {
        "chatId": "={{ $json.chatId }}",
        "text": "={{ $json.message }}",
        "additionalFields": {}
      },
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        1320,
        -20
      ],
      "id": "be38674c-aa8f-4a6f-ad24-39c48d92e84e",
      "name": "Send Alert",
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "610674d7-abdc-420c-b17c-a28e99ef9b09",
              "leftValue": "={{ $json.userId }}",
              "rightValue": "",
              "operator": {
                "type": "number",
                "operation": "notEmpty",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        220,
        60
      ],
      "id": "1bccd19f-ff14-45ec-bbab-4dfa2688e4c2",
      "name": "Is There Active Users"
    }
  ],
  "connections": {
    "Schedule Trigger": {
      "main": [
        [
          {
            "node": "Get All Users",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get All Users": {
      "main": [
        [
          {
            "node": "Filter Active Users",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Filter Active Users": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 0
          },
          {
            "node": "Is There Active Users",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Weather Alerts API": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Merge": {
      "main": [
        [
          {
            "node": "Check Alert Conditions",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check Alert Conditions": {
      "main": [
        [
          {
            "node": "Send Alert",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Is There Active Users": {
      "main": [
        [
          {
            "node": "Weather Alerts API",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": true,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "102d1fdf-8672-4b6d-8859-c8a8140d2b54",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "Q3XzfXtAjifX8MZ1",
  "tags": []
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• googleApi
• telegramApi

About this workflow

Weather Bot - Alert Monitor. Uses googleSheets, httpRequest, telegram. Scheduled trigger; 8 nodes.

Source: https://github.com/SAMURAI711/telegram-weather-alert-bot/blob/0df2cb09f542bbd86f989b41d0a4e8ee0a1b7345/n8n-workflows/alert-monitor.json — original creator credit. Request a take-down →

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