Environmental health is one of the public health domains determined by physical, chemical, biological, social, and psychosocial factors. The current improvement and success in terms of technology, society, and the provision of multiple services after the Industrial Revolution were accompanied by a massive toll of air pollutants that were introduced and emitted into the air, causing global public health issues. It is crucial to understand how harmful air pollutants affect ecological health and the economic consequences of such effects. This study examined the relationship between Environmental Health assessed by CO Carbon Monoxide per capita (CO), Public Health Expenditures per capita (PHE), Toxic Air Pollution (PM_2.5 and NO₂), and Life Expectancy (LE), using the novel statistical model Bootstrap Autoregressive Distributed Lag (BARDL), for period data from 1990 to 2022 in Saudi Arabia. Results showed no cointegrating relationship and a negative one-way causal relationship between CO, NO₂, PM_2.5, and LE. Moreover, a positive two-way causal relationship was found between PHE and LE. Saudi Arabia initiated several strategies that aim to reduce environmental pollution and improve the overall quality of air, a step that will promote healthy living and have a vast positive economic impact in the long run.