Weather on your browser's new tab used to require either a paid extension or one that was gathering your data as a "trade" for the free service. That's changed.
This is about the free options specifically, what they include, and where the limits are.
Why Free Weather Extensions Exist
Most browser extension developers aren't running a business — they're scratching their own itch. A developer who wanted weather on their new tab built the tool, then published it. No monetization required.
The challenge with free extensions is maintenance: weather APIs have costs and rate limits. A popular free extension can become expensive for the developer to run if they're paying for a weather API. Some free extensions hit this wall and either add payments or shut down.
Weather & Clock Dashboard is MIT open source, meaning the code is public and free to modify. The developer made choices about which APIs to use and how to manage costs — decisions you can verify by reading the source code.
What You Actually Get Free
Weather & Clock Dashboard (addons.mozilla.org/en-US/firefox/addon/weather-clock-dashboard/) includes at no cost:
- Current conditions — temperature, weather description, appropriate icon
- 3-day forecast — daily high/low with weather icons for each day
- Multiple world clocks — add as many cities as you want
- Search bar — Google by default
- Dark/light mode — auto-detects system preference
- No account requirement — settings stored in browser local storage
What's not in this extension: news feeds, todo lists, daily photos, habit tracking, Spotify integration.
Where Free Extensions Usually Cut Corners
The tradeoff for a free weather extension is often in data freshness or forecast depth:
Update frequency: Some free extensions update every hour rather than more frequently. For most users checking the forecast, hourly is fine.
Forecast length: 3 days is common for free tiers. 7-day+ forecasts typically require paid API tiers. Weather & Clock Dashboard shows 3 days.
Location granularity: Some free extensions only get your city-level location, not neighborhood. For weather purposes, city-level is usually sufficient.
Historical data: None. Free weather extensions show current and forecast; historical data requires paid APIs.
Privacy: Free vs. Paid
An important consideration for free weather extensions: some are free because they sell your data. The business model: show you weather for free, track your browsing behavior and location patterns, sell that data to advertisers.
Signs of a data-selling free extension:
- No privacy policy, or vague "we share with partners" language
- Requires account creation (more data points)
- Large permissions request (access to all websites, browsing history)
- Closed source (can't verify what it does)
Weather & Clock Dashboard is MIT open source (code verifiable), requires no account, needs only new tab page access, and has a straightforward privacy approach: location goes to a weather API, nothing stored.
The Honest Assessment
Free is fine for most weather new tab use cases. The main limitation is forecast depth (3 days vs 7-10 for paid services) and that occasional free services get abandoned or start showing ads.
Weather & Clock Dashboard has been consistent on AMO, is open source, and meets the "I just want to know the weather when I open a new tab" use case without any cost or account friction.
If you eventually want 10-day forecasts, hourly breakdowns, or radar maps, you'll probably want a dedicated weather app rather than any browser extension.
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