The top 5 affiliate niches can vary depending on factors such as current trends and market demand. However, some perennially popular and profitable affiliate niches include:

1. Health and Wellness: This niche encompasses various sub-categories such as fitness, nutrition, weight loss, supplements, and mental well-being. With a growing emphasis on personal health, this niche continues to attract a large audience.
2. Personal Finance: Helping people manage their money, save, invest, and achieve financial independence is a highly sought-after niche. Affiliate opportunities in this niche include credit cards, budgeting tools, investment platforms, and financial education resources.
3. Beauty and Skincare: The beauty industry is consistently in demand, with consumers always seeking products and information on skincare routines, makeup, haircare, and personal grooming. Affiliates can promote beauty products, tutorials, reviews, and beauty subscription boxes.
4. Technology and Electronics: This niche includes a wide range of products such as smartphones, laptops, gaming consoles, smart home devices, and wearable tech. Affiliates can focus on product reviews, comparisons, and tech-related content to drive sales.
5. Home Improvement and Decor: With the rise of DIY culture and home renovation projects, the home improvement niche offers affiliate opportunities for promoting tools, furniture, home decor, and interior design services.

Remember, the success of an affiliate niche depends on your passion, knowledge, and ability to provide value to your audience. It’s essential to choose a niche that aligns with your interests and has a target audience with purchasing power.