A view of haze shrouding the Marina Bay area and the central business district in Singapore ahead of the 2026 Formula One Singapore Grand Prix. (EPA Images pic)SINGAPORE: Singapore rolled out subsidies for haze-related medical treatment Monday and schools were closed in parts of neighbouring Malaysia, as both countries grapple with persistently unhealthy air quality due to fires in nearby Indonesia.

Singapore again ranked the world's most polluted city on Monday, according to Swiss-based air quality monitor IQAir, as the fires on Borneo and Sumatra islands -- intensified by a turbo-charged El Nino weather phenomenon -- keep emitting toxic haze.

The fires have created severe haze locally, with tens of thousands of cases of respiratory illnesses.