Online Weather Forecast is a subscription-based browser extension for Firefox that provides users with quick access to local weather conditions and forecasts. By entering a city or zip code, users can view current weather details, hourly forecasts, and a comprehensive 7-day outlook. Additional features include information on cloud coverage and UV index, making it a useful tool for planning activities based on weather conditions.

The extension collects anonymous technical information, such as install date and user agent details, to enhance product improvements and support troubleshooting efforts. This data is essential for maintaining the extension's functionality, although it cannot be used to personally identify users. Overall, Online Weather Forecast stands out for its ease of use and detailed weather insights, catering to users seeking reliable weather information.