Myocardial infarction events involving morality, incredibly high temperatures, and minute particles. Myocardial infarction (MI) morbidity has been connected to extreme temperature events (ETEs), such as heat wave and cold spell, but their effects on MI mortality are less well understood. Although ambient fine particulate matter (PM2.5) and severe temperatures may work in concert to increase cardiovascular mortality , it is still unclear whether or how ETEs and PM2.5 interact to cause MI deaths.METHODS: To examine the relationship between exposure to ETEs and PM2.5 and MI mortality and assess their interacting effects, a time-stratified case-crossover study of 202 678 MI deaths in Jiangsu province, China, from 2015 to 2020 was conducted. Twelve ETE definitions were created using a variety of temperature thresholds and durations based on the perceived ambient temperature. In order to estimate daily ETEs and PM2.5exposures , values were taken from validated grid datasets at reside...