Astero utilizes Ajax technology and local caching for fast loading of weather forecasts that supports a fixed location or  user geolocation . Optional  search function  lets users look up the weather with a city name or zip code, and choose their  preferred units ! Create  stunning  weather widgets with animated backgrounds, custom images or a clean and minimalist look easily with the  shortcode builder . Scripts and styles are loaded conditionally to minimize HTTP requests, and Html5 caching is enabled to increase loading speed and avoid API call limits. Use as a  widget ,  shortcode , or both!