Singapore haze update: PSI forecast 51–70 for November 1, showers expected to keep haze subdued

Singapore's Meteorological Service said in its haze situation update on October 31 that the PSI forecast for November 1 is 51–70, in the Moderate range.

Today's readings: PM2.5 back in the Normal band

Showers fell over the northern and eastern parts of Singapore on Saturday. As at 5pm, the 1-hour PM2.5 concentration readings were 8–40 µg/m³, in Band 1 (Normal), and the 24-hour PSI was 58–75, in the Moderate range. Moderate haze remained confined over parts of Kalimantan.

Coming days: showers likely to keep haze subdued

For tomorrow, prevailing winds are expected to blow from the east or southeast, and showers over Sumatra, Kalimantan and Singapore and the surrounding region are likely to keep the haze situation subdued for Singapore.

Easterly or southeasterly winds are expected to continue on Monday and turn light and variable on Tuesday. However, forecast showers are likely to continue suppressing the haze situation.

For immediate outdoor activities, the public is advised to check the 1-hour PM2.5 concentration readings and personal guide on the haze microsite haze.gov.sg or the myENV mobile app. Further updates are available from the National Environment Agency and the Meteorological Service Singapore websites.

Source: Meteorological Service Singapore, 'Haze Situation Update (31 October 2026)', October 31, 2026.