Globally, conflicts, climate change, and global warming have compounded an already urgent water shortage problem. Dealing with this important issue and guaranteeing fair water access for all calls for further dedication and the launch of innovative projects. This work presents a novel, autonomous, 5 kW solar-powered single-stage ammonia/water absorption system solution to atmospheric water harvesting, given the increasing global consciousness about this problem. The simulations provide insightful information that can form the basis for upcoming research projects among colleagues. The investigation and analysis of the effects of humidity, a fundamental component in condensing atmospheric water, shapes the water-collecting process and drives the central focus of this work. Careful cross-referencing with current research and thorough investigation and parameter analysis help to strengthen the validity of the conclusions. Three different climatic zones- a coastal, a normal, and a desert environment- test the flexibility of the research. The system averages 76 L daily water collection in a desert environment and increases to 140 L daily in a coastal region. Surprisingly, July is the most common month for coastal water collection. Comparative study against other designs helps one to fully assess the system’s efficacy in absorbing water vapor.