Which of the grand slam is most popular why?

The Australian Open is often considered the most popular Grand Slam due to its vibrant atmosphere, accessibility, and the warm summer weather in January when it takes place. Its unique blend of entertainment, including music and cultural events, attracts a diverse audience. Additionally, the tournament's modern facilities and fan-friendly approach contribute to its appeal. However, popularity can vary by region and personal preference, with Wimbledon and the US Open also having strong followings.