Indonesian Wildfires Push Singapore Air Pollution to Dangerous Levels

Smoke from extensive wildfires in Indonesia has blanketed Singapore in hazardous haze, pushing air pollution to the world's highest level among monitored cities on Friday, October 9, 2026. The deteriorating conditions coincide with preparations for the Singapore Formula One Grand Prix and other major events, raising concerns about public health and outdoor entertainment.

Swiss air quality monitor IQAir recorded an air quality index (AQI) of 216 in Singapore on Friday morning, placing conditions in the very unhealthy category. Singapore topped IQAir's global ranking of the most polluted cities, while Kuala Lumpur, Malaysia, ranked second, according to CNN.

Smoke has obscured prominent landmarks, including Marina Bay Sands and surrounding skyscrapers. The haze originates from fires in parts of Sumatra and Borneo, where Indonesia has been battling widespread blazes for weeks.

The BBC reported on October 7 that approximately one million hectares of land had burned in Indonesia this year, underscoring the scale of the fire season and its effects across Southeast Asia.

Singapore's National Environment Agency reported that smoke from southern and central Sumatra and West Kalimantan was moving toward the city-state.

In its Thursday update, the agency warned that "moderate to dense smoke plumes from southern and central Sumatra and West Kalimantan were observed to drift towards Singapore," according to CNN.

The agency also cautioned that "Under the prevailing southeasterly or southerly winds, smoke haze may continue to drift towards Singapore," according to the same report.

The annual haze problem is linked to fires during Indonesia's dry season, when peatlands are cleared and drained for commercial plantations. The Guardian reported that an anticipated "super" El Niño is intensifying the risk by bringing exceptionally dry conditions to affected areas.

Wang Jingyu, an assistant professor at Singapore's National Institute of Education at Nanyang Technological University, linked the worsening conditions to a prolonged rainfall deficit.

"Rainfall across the region has been about 80% below normal since June, fuelling the most intense fire season in over a decade," Wang said, according to The Guardian.

The pollution has also affected Malaysia, where the education ministry closed schools in several states during the week as conditions deteriorated, CNN reported.

For the Singapore Grand Prix, officials have distinguished between the race itself and outdoor entertainment activities. The motorsport governing body, the FIA, said potential restrictions could affect concerts and other activities, while the race was not expected to be disrupted under the conditions then prevailing.

Singapore GP told CNN on Friday that "there are currently no plans to modify our entertainment activities." Scheduled performers include Janet Jackson and The Killers.

The Singapore Tourism Board separately told CNN that "Action plans are in place based on the intensity of the haze." Organizers have also said they will coordinate with relevant agencies and make N95 masks available if necessary, according to The Guardian.

In its account of contingency planning, The Guardian reported that an FIA spokesperson said "there is a contingency in place" and that "there may be some restrictions on outdoor activity." The spokesperson indicated that restrictions would likely focus on entertainment rather than members of the paddock.

The organizers said they would "work closely with the relevant agencies" when assessing potential "visibility, public health or operational issues," according to The Guardian.

Health specialists have warned that prolonged exposure could affect people differently depending on their activities and underlying health conditions. Chris Carlsten, a professor of medicine at the University of British Columbia who studies air pollution's effects on the body, described findings from research examining cognitive performance after exposure.

"Our findings show that the pollution effect is similar to that of an alcoholic beverage," Carlsten said, according to The Guardian, referring to research in which participants spent two hours in polluted conditions before taking cognitive tests, including reaction-time assessments.

Chris Tyler, a reader in environmental physiology at the University of Roehampton who has worked with Formula One drivers, highlighted possible consequences for their preparation before the race.

"These are the sorts of environments where prolonged exposure to the pollution over a number of days could be somewhat detrimental," Tyler said, according to The Guardian, referring to outdoor training in Singapore's hot conditions.

Carlsten said he would advise drivers to wear masks if air quality remained poor, allowing them to "keep their lungs clean," according to The Guardian. The article also reported that the FIA had "no concerns" about visibility on the circuit.

A Formula One spokesperson stated that "There is absolutely no risk to the event and the conditions where the event is taking place are not at any level of concern," according to The Guardian.

Teams have not indicated major changes to their preparations. Audi, which is competing in its first Singapore Grand Prix, said its drivers are trained to manage "varying levels of air quality," according to The Guardian.

Drivers also expressed limited concern about the immediate conditions. Cadillac driver Valtteri Bottas, who cycled more than 400 kilometers (248 miles) from Malaysia to Singapore during the week, told Reuters that "I don't feel like it's that extreme yet. I mean, it's not great, but I don't think there's that much you can do."

Ferrari driver Lewis Hamilton told Reuters he had "much bigger issues to focus on." The Guardian noted that Hamilton had been advised against outdoor running during the 2019 Singapore Grand Prix, when haze also affected the event.

Public health concerns extend beyond the drivers, who spend a relatively limited period on track. Spectators attending races, concerts and other outdoor events may remain exposed for several hours, increasing the importance of monitoring air quality.

Wang said short-term exposure generally causes mild irritation in healthy people, including sore throats, coughing and sneezing. Children, older adults, pregnant women and people with existing conditions such as asthma face greater risks, including possible aggravation of respiratory illness or acute bronchitis.

The haze has affected Singapore during previous editions of the race, including in 2015 and 2019, when the event proceeded despite smoky conditions, CNN reported. Forecast thunderstorms on Friday and Saturday afternoon offered the possibility of temporary relief from the pollution.