Singapore Air Quality Fell as Haze Levels Rose
Unhealthy air from regional wildfires may affect your respiratory health if you live in or travel to Singapore.
Updated on Oct. 12, 2026 in Asthma
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Singapore recently experienced a surge in air pollution, with Pollutant Standards Index (PSI) readings consistently remaining in the unhealthy range. The haze, resulting from forest fires in Indonesia, peaked at a PSI of 192 on October 9, 2026.
Why it matters
The persistent haze poses significant respiratory risks, as breathing fine particulate matter can trigger asthma attacks and worsen underlying lung conditions. Increased air pollution levels during these events often necessitate stricter adherence to indoor activity guidelines to limit exposure.
Official air quality surveillance recorded a peak PSI of 192 on October 9, 2026, after multiple days of readings above the 101 unhealthy threshold. The data remains preliminary as regional monitoring continues to track the intensity of forest fire smoke drifting into the area.
The players
National Environment Agency
The Singaporean regulatory body responsible for monitoring air quality and managing environmental health threats.
Greenpeace
An international environmental organization that tracks deforestation and identifies companies linked to large-scale forest fires.
ASEAN Coordinating Centre for Transboundary Haze Pollution Control
A regional collaborative body that coordinates intergovernmental responses to forest fire smoke across Southeast Asia.
The details
The Transboundary Haze Pollution Act is triggered when PSI readings exceed 101 for over 24 hours, signaling a high concentration of fine particulate matter. When these particles are inhaled, they penetrate deep into the lungs and can enter the bloodstream, causing systemic inflammation. This is exacerbated during El Nino years, when hotter, drier weather makes forest fires in Indonesia significantly harder to extinguish, leading to prolonged smoke drift.
Timeline
September 4-5, 2026: Air quality remained in the unhealthy range for 25 hours.
September 2026: Indonesia identified 138 suspects and sealed 68 company concessions.
October 5, 2026: Air quality entered the unhealthy range.
October 9, 2026: PSI reached a peak reading of 192.
October 12, 2026: Air quality remained unhealthy across all regions.
Health Landscape
This event highlights the application of the Transboundary Haze Pollution Act in regulating cross-border environmental health hazards. It reflects the ongoing challenge of managing regional respiratory risks caused by land-use practices during extreme weather cycles.
If you have asthma or other respiratory conditions, monitor your local PSI readings daily and minimize outdoor exertion during peak haze periods. Consult your physician to ensure your asthma action plan is updated and that you have sufficient medication on hand for periods of poor air quality.
The takeaway
Prolonged exposure to haze significantly increases the risk of respiratory distress and exacerbations for those with sensitive lungs. During periods of high PSI, prioritize staying indoors with high-efficiency air filtration systems to mitigate the impact of fine particulate matter.
Further reading
For more on protecting your respiratory health, visit Asthma.
Source note: This article includes information reported by TEMPO.
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