Question: Is there a weather API that offers customizable units, data exclusion, and extension options for hourly data?

If you're looking for a full-featured weather API with options for units, data inclusion and exclusion, and hourly data extension, Pirate Weather is another top contender. It offers raw model data from government agencies and supports multiple model sources including NBM, HRRR, GFS and ERA5. The API also offers customizable units, data inclusion and exclusion, and hourly data extension. It also supports sub-hourly forecasts, short-term smoke forecasts, and precipitation types.

Another contender is Weather Machine, which aggregates weather data from a variety of APIs including The Weather Company, AccuWeather and AerisWeather. It presents a unified interface that offers benefits like parallelization, unit conversion and nicely formatted responses. Weather Machine also offers an advanced forecast-aware caching system that can help cut data usage. It's geared for developers and businesses that want to build weather data into their apps without having to wrestle with multiple APIs.

Tomorrow.io is another powerful service that offers hyper-accurate weather data and forecasts with features including real-time weather data, historical weather API and probabilistic forecasting. It's geared for businesses that want to run operations and protect assets by managing weather risks. It doesn't specifically offer customizable units for hourly data, but its broader feature set and deeper integration abilities make it a good option for companies that want to tackle weather-related challenges.

For hyperlocal weather data, Rainbow offers an API using AI technology that offers the most accurate and localized weather forecasts. It updates forecasts with a 1-minute temporal resolution and 1 sq km spatial resolution. That makes it a good option for businesses that need hyperlocal weather data for decision making, such as ridesharing, same-day delivery, aviation and agriculture.