What is the maximum legal possession limit of cannabis flower for non-residents in Illinois?

The maximum legal possession limit of cannabis flower for non-residents in Illinois is 15 grams. This limit reflects Illinois’ approach to regulating cannabis possession, ensuring that individuals who are not residents of the state can possess a reasonable amount for personal use while visiting. This amount is consistent with the state's legal framework, which aims to balance accessibility with the need to maintain public safety and order.

For context, other amounts listed, such as 30 grams and 500 grams, exceed the legal limit for non-residents and do not align with the established regulations in Illinois. The smallest amount mentioned, 2.5 grams, is below the legal threshold, indicating that non-residents are allowed to carry more than just a minimal quantity. Understanding these limits is crucial for ensuring compliance with the state's cannabis laws, especially for visitors.