A study conducted in Singapore has found that emergency department visits for asthma and chronic respiratory disease go up when PM2.5 levels are higher, according to The Straits Times. The newspaper reported the finding on Tuesday, 29 September 2026.
The study examined the relationship between fine particulate matter, known as PM2.5, and the number of people seeking emergency care for these respiratory conditions. The Straits Times reports that the two rise together, with more emergency visits recorded as PM2.5 concentrations increase.
PM2.5 refers to airborne particles small enough to be inhaled deep into the lungs. The study's focus was on emergency department attendance, meaning cases serious enough to require urgent hospital care rather than routine clinic visits. The Straits Times did not, in the material available, specify the size of the increase, the period covered by the study, or the institutions involved.
The finding adds to existing concern about how air quality affects people with chronic lung conditions. Because the study looks at emergency visits specifically, it points to the more severe end of the health impact, where symptoms become acute enough that patients need hospital treatment. The Straits Times frames the result as a link between higher PM2.5 levels and rising emergency attendance for asthma and chronic respiratory disease.
What to watch next: whether Singapore authorities or the study's authors release further detail, such as the scale of the effect or any policy response aimed at protecting people with respiratory conditions during periods of poorer air quality.
