A recent study in Sapporo, Japan, highlights the detrimental effects of extreme heat and humidity on urban green spaces. Researchers used the travel cost model (TCM) and discrete choice experiment (DCE) to evaluate the economic value of these spaces under various climate scenarios. The findings reveal that increased temperatures and humidity levels lead to a substantial decline in park visitation and recreational value. Specifically, under worst-case conditions of 34°C (93°F) and 80% humidity, the annual recreational value loss is estimated at USD 22.9 million. This loss underscores the importance of implementing effective mitigation strategies to maintain the usability and benefits of urban green spaces.