The localized worsening in the west brought current fine particle concentrations into the elevated bracket for the first time in two days. Meanwhile, the remaining parts of the island recorded steady figures ranging between 25 and 46 as of 11 a.m. The islandwide 24-hour Pollutant Standards Index remained between 69 and 78, securely within the good to moderate classification. General guidance cautions that any deterioration into the unhealthy PSI range of 101 to 200 would require vulnerable groups to limit outdoor exposure.
Key points
Fine particle levels from 56 to 150 are classified as elevated, signaling a localized det…: Fine particle levels from 56 to 150 are classified as elevated, signaling a localized deterioration in current air quality.
Islandwide 24-hour PSI readings remain well below the unhealthy threshold that starts at…: Islandwide 24-hour PSI readings remain well below the unhealthy threshold that starts at 101.
Vulnerable individuals, including children and the elderly, must reduce outdoor exertion…: Vulnerable individuals, including children and the elderly, must reduce outdoor exertion if air quality enters the unhealthy band.
Sources checked by our analysis pipeline: 1
- Air quality in Singapore’s west worsened on Oct 29, with one-hour PM2.5 at 57, the first elevated reading in any region since Oct 27.
- Other regions stayed lower, with PM2.5 between 25 and 46 at 11am. The 24-hour PSI remained good to moderate, at 69 to 78.
- PM2.5 above 56 means elevated fine particles. If air becomes unhealthy, older people, children and those with health issues should cut outdoor activity.
AI generated
SINGAPORE – Air quality worsened in the west on the morning of Oct 29, with the one-hour PM2.5 readings at 57, in the elevated range.
It is the first time since the afternoon of Oct 27 that the current air quality in any of the five regions here entered the elevated range.
At 11am, the one-hour PM2.5 readings for the remaining regions stood between 25 and 46.
PM2.5 readings are gauged hourly and reflect the current air quality. Scores from zero to 55 represent normal values, and those between 56 and 150 indicate an elevated concentration of fine particles.
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