Send multi-city weather forecasts with AI-enhanced formatting from OpenWeatherMap to Gmail
Overview
This workflow automates weather forecast delivery by collecting city names, fetching 5-day forecasts from OpenWeatherMap, and generating professionally formatted HTML emails using GPT-4. The AI creates condition-based color-coded reports with safety precautions and sends them via Gmail.
How It Works
A form trigger collects up to three city names, which are geocoded via OpenWeatherMap API to retrieve coordinates and 5-day forecasts.
JavaScript nodes process the raw weather data into daily summaries, calculating temperature ranges, precipitation levels, wind speeds, and dominant weather conditions.
GPT-4 then generates professionally formatted HTML emails with condition-based color coding: The AI intelligently adds contextual safety warnings for heavy rain, extreme heat, high winds, and thunderstorms.
A validation node ensures proper JSON formatting before Gmail sends the final briefing.
Use Cases
• Field ops & construction crew briefings • Travel planning and itinerary preparation • Outdoor event planning & coordination • Logistics and transportation route planning • Real estate property viewing scheduling • Sports and recreational activity planning
Setup Requirements
- OpenWeatherMap API credentials
- OpenAI API key
- Gmail OAuth2 authentication
Need Help?
Join the Discord or ask in the Forum! README file available at https://tinyurl.com/MulticityWeatherForecast
Send Multi-City Weather Forecasts with AI-Enhanced Formatting from OpenWeatherMap to Gmail
This n8n workflow automates the process of fetching weather forecasts for multiple cities, enhancing the forecast data with AI-driven formatting, and sending the personalized weather updates via Gmail. It simplifies the task of keeping stakeholders informed about weather conditions in various locations with clear, well-structured emails.
What it does
- Triggers on Form Submission: The workflow starts when a form is submitted, likely containing the list of cities for which to fetch weather data.
- Fetches Weather Data: For each specified city, it uses the OpenWeatherMap API to retrieve the current weather forecast.
- Aggregates Weather Data: It merges the weather data from all cities into a single data stream.
- Formats Data with AI: It utilizes the OpenAI API to take the raw weather data and format it into a more readable and aesthetically pleasing text, suitable for an email. This step enhances the presentation of the forecast.
- Sends Email via Gmail: Finally, it compiles the AI-formatted weather forecast into an email and sends it using Gmail to a predefined recipient or recipients.
Prerequisites/Requirements
- n8n Instance: A running instance of n8n.
- OpenWeatherMap API Key: An API key for OpenWeatherMap to fetch weather data.
- OpenAI API Key: An API key for OpenAI to utilize its language model for text formatting.
- Gmail Account: A configured Gmail credential in n8n to send emails.
Setup/Usage
- Import the workflow: Import the provided JSON into your n8n instance.
- Configure Credentials:
- OpenWeatherMap: Add your OpenWeatherMap API key as a credential.
- OpenAI: Add your OpenAI API key as a credential.
- Gmail: Set up your Gmail OAuth2 or API Key credential.
- Configure "On form submission" Trigger:
- Define the form fields that will provide the city names (e.g., a comma-separated list of cities).
- Configure "Edit Fields (Set)" Node:
- Ensure this node correctly extracts and prepares the city names from the trigger output for the OpenWeatherMap node.
- Configure "OpenWeatherMap" Node:
- Select your OpenWeatherMap credential.
- Map the city input from the previous node.
- Configure "OpenAI" Node:
- Select your OpenAI credential.
- Set up the prompt to instruct the AI on how to format the incoming weather data into a coherent and well-structured email body.
- Configure "Gmail" Node:
- Select your Gmail credential.
- Specify the recipient(s) email address.
- Map the AI-formatted output from the OpenAI node to the email body.
- Define a suitable subject line for the email.
- Activate the workflow: Once configured, activate the workflow. It will now run automatically upon form submissions.
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