Top 3 websites for you to find out up to date real estate market trends going out nationally 

1. Zillow: Zillow is widely regarded as one of the best websites for real estate data and market trends. This is because they have a massive database of real estate listings and can provide valuable insights into home values, inventory, and trends across different regions. Their "Zillow Home Value Index" is a popular metric used by industry professionals and investors to track the health of the real estate market.
2. Redfin: Redfin is another excellent website for real estate market trends, as they provide real-time data on home sales, price trends, and inventory levels. They also have a team of expert real estate agents who can provide valuable insights and analysis on the market.
3. Realtor.com: Realtor.com is a popular website for real estate data and insights, providing up-to-date information on home sales, price trends, and inventory levels. They have a comprehensive set of tools and resources for buyers and sellers, including a mortgage calculator, home value estimator, and neighborhood insights.

Overall, each of these websites has its own strengths and advantages when it comes to providing real estate market trends nationally, and choosing the best one ultimately depends on your specific needs and preferences.