Air quality in most of Singapore unhealthy as haze persists; PSI in west ‘very unhealthy’
One-hour PM2.5 levels were elevated across all regions at 7am.
Singapore's air quality remained poor on Oct 18, with the 24-hour PSI in the "unhealthy" to "very unhealthy" range across most regions, except for the west where it reached "very unhealthy" levels. The one-hour PM2.5 readings, which indicate elevated fine particle concentrations, were also elevated throughout the island. Singapore is currently experiencing its 14th consecutive day of unhealthy air quality, the longest continuous stretch of poor air quality since the 2015 haze crisis.
The National Environment Agency forecast that the PSI for the following day could range between 150 and 220, indicating "unhealthy" to "very unhealthy" conditions, while also noting that winds may shift south-southeast or south, potentially reducing smoke haze transport from Kalimantan.
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