Forecastfox for Firefox vs. Other Weather Extensions: Which Is Best?

Forecastfox for Firefox: The Complete Guide to Installation & Features

Updated: February 7, 2026

What is Forecastfox?

Forecastfox is a Firefox browser extension that displays current weather, forecasts, and alerts directly in your toolbar or new tab. It provides quick access to temperature, conditions, and multi-day forecasts without leaving your browsing session.

Key features

• Toolbar weather display: Current temperature and condition icon visible at a glance.
• Multi-day forecast: 7–10 day outlook with highs, lows, and precipitation chances.
• Hourly forecast: Hour-by-hour predictions for planning short-term activities.
• Custom locations: Add multiple cities and switch between them quickly.
• Weather alerts: Severe weather notifications when available.
• Units and theme options: Toggle Celsius/Fahrenheit, ⁄₂₄-hour time, and light/dark UI.
• Map and radar (when available): Interactive radar or map overlay for tracking storms.
• Compact pop-up panel: Detailed conditions, sunrise/sunset, wind, humidity, and feels-like temperature.

System requirements

• Firefox browser (current stable version recommended).
• Internet connection for fetching weather data and map tiles.
• Permission to access location if you want automatic local weather.

Installation — step by step

1. Open Firefox.
2. Go to addons.mozilla.org (Firefox Add-ons) or search “Forecastfox” in the Add-ons Manager (Menu → Add-ons and themes).
3. Click the Forecastfox add-on entry.
4. Click “Add to Firefox.”
5. Review requested permissions and click “Add.”
6. Confirm any prompts; allow access to your location if you want automatic local detection.
7. Pin the Forecastfox icon to the toolbar: Menu → Customize Toolbar → drag Forecastfox icon to desired position (or right-click the icon and choose “Pin to toolbar”).

Initial setup and customization

• Open the Forecastfox pop-up by clicking the toolbar icon.
• Add or remove locations: use the search field to add cities; click the trash icon to remove.
• Set default city: click the three-dot menu next to a city and choose “Set as default.”
• Change units: Settings → Units → choose Celsius or Fahrenheit.
• Configure update frequency: Settings → Update interval → choose (e.g., 15, 30, 60 minutes).
• Enable/disable alerts: Settings → Alerts → toggle severe weather notifications.
• Theme and display: Settings → Appearance → choose compact/expanded panel and light/dark theme.

Using Forecastfox effectively

• Pin important locations (home, work, travel destinations) for quick switching.
• Combine Forecastfox with Firefox’s Containers or profiles to keep weather for different regions separated.
• Use hourly forecast before planning outdoor activities; consult radar for precipitation timing.
• Enable notifications for areas prone to severe weather.

Troubleshooting common issues

• No weather data or “Unable to fetch”: check internet connection, ensure add-on has permissions, try refreshing or re-adding the location.
• Location detection fails: allow location permission in Firefox (Site Settings → Permissions → Location) or add city manually.
• Icon missing from toolbar: open Menu → Customize Toolbar → re-pin the Forecastfox icon.
• Outdated forecast or wrong units: open Settings and verify update interval and unit preferences.
• Extension conflicts or slow performance: disable other weather extensions or restart Firefox; update to the latest Firefox version.

Privacy and data sources

Forecastfox fetches weather from third-party APIs (provider listed in extension details). It may send location or query data to those services to return forecasts. Review the add-on’s privacy policy on its add-on page for specifics. (If you prefer not to share location, add cities manually instead of allowing automatic detection.)

Alternatives

• Weather extensions built-in to Firefox’s new tab or other popular add-ons (e.g., Dark Sky-derived tools where available, OpenWeather-based extensions).
• Bookmark weather sites like weather.gov, MeteoBlue, or Weather.com for full-page detail and model comparisons.

Quick reference table