To accompany Google Trends, which show the popularity of search terms in relation to each other over time, Google has now released a new feature dubbed Hot Trends. Hot trends, as its name implies, provides the hottest current searches updated throughout the day. For each Hot Trend, there are results from Google News, Google Blog Search and web search, which help explain why the search is hot. Hot Trends also allows viewing of what queries were hot on a particular day.
You may think Hot Trends comprises of the search terms people look for most often. It doesn't. Instead, the Hot Trends algorithm analyzes millions of searches to find those that are deviating the most relative to their past traffic. Hot Trends is currently available only in English, but there are future plans for international versions. Hot Trends is replacing the weekly Google Zeitgest list, although monthly and annual lists will still be provided for each country. In addition to Hot Trends, Google Trends now allows viewing of "subregions" (e.g. states within the U.S.) across more than 70 countries.