Multi-City Weather Forecast Emailer
Submit up to three cities and receive a color-coded 5-day weather briefing with safety warnings via email.
ops and IT teamsanyone managing their own day
What it does
Submit up to three cities to instantly receive a color-coded five-day weather briefing with safety warnings delivered directly to your email. You get professionally formatted daily summaries that highlight critical conditions so you can plan ahead without checking multiple sources.
Step by step
- Parse the form payload to extract exactly three city strings and validate they are non-empty.
- Construct HTTP GET requests to the OpenWeatherMap API endpoint using a hardcoded API key for each city.
- Iterate through the five days of forecast data to calculate average temperature and dominant weather condition.
Where the LLM does the work
- Generate an HTML template that dynamically inserts the processed daily summaries into structured table rows.
- Apply CSS styling rules based on specific weather conditions, such as red text for heat warnings or blue for rain.
- Draft a professional subject line and opening greeting that references the specific cities included in the report.
Watch out for
OpenWeatherMap free tier limits requests per minute so you must add a small delay between API calls to avoid 429 errors.
HTML injection risks exist if city names contain special characters so sanitize all input strings before embedding them in the email body.
API responses may lack data for obscure locations so implement a fallback message that gracefully handles missing forecast information.
Tools that fit
The agent brief
Everything your agent needs, including the gotchas. Copy it and go.
You are helping me build the following AI agent workflow. ## Goal Multi-City Weather Forecast Emailer: Submit up to three cities and receive a color-coded 5-day weather briefing with safety warnings via email. ## Specification - What it does: Submit up to three cities to instantly receive a color-coded five-day weather briefing with safety warnings delivered directly to your email. You get professionally formatted daily summaries that highlight critical conditions so you can plan ahead without checking multiple sources. - Trigger: Run manually (Manual · on form submission) - Autonomy: Fully hands-off - Expected setup effort: about an afternoon - Tools/services involved: - OpenWeatherMap: fetching weather data - Gmail: sending formatted emails - OpenAI: generating HTML email content ## Known pitfalls, handle each one explicitly in your implementation 1. OpenWeatherMap free tier limits requests per minute so you must add a small delay between API calls to avoid 429 errors. 2. HTML injection risks exist if city names contain special characters so sanitize all input strings before embedding them in the email body. 3. API responses may lack data for obscure locations so implement a fallback message that gracefully handles missing forecast information. ## Reference implementation https://n8n.io/workflows/9909 (workflow template) Fetch and inspect this before building. If it matches my stack, adapt it; if not, rebuild the pattern with my tools. ## Process requirements 1. Before building: ask me which of the listed tools I actually use and what my platform is (n8n / Make / code / other). Do not assume. 2. Adapt the pattern to my answers; do not force the reference stack. 3. Address every pitfall above; tell me how you handled each. 4. Provide a test plan I can run before letting this touch real data. 5. Ask before any step that sends messages, modifies data, or spends money. Source: https://usecasesforagents.com/use-case/multi-city-weather-forecast-emailer/ via usecasesforagents.com
Frequently asked questions
Can I use a different Niche API than OpenWeatherMap?
Yes. OpenWeatherMap is only the example niche api in this recipe. The same flow works with Bitly, Google Maps Distance Matrix API, Open-Meteo API and Philips IntelliVue Devices. Swap the niche api connection and keep the rest of the setup as written.
Want this running in your business?
This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.
Who it's for
Built for Ops-IT teams who need one more recurring task off a human's plate.
Works just as well for personal use, no business context needed.