Haze - The National Environment Agency

PSI Forecast for planning outdoor activities on 4 November 2026.

PSI forecast for 4 November 2026 is 51–80, within the Moderate range.

Good–Moderate PSI (0–100): Healthy persons, elderly people, pregnant women, children, and persons with chronic lung or heart disease can continue normal activities. Advice is based on the high end of the PSI forecast.

Current Air Quality

North

West

Central

East

South

North

West

Central

East

South

Advisory unavailable.

PSI Value	Air Quality Descriptor
0 - 100	Good to Moderate
101 - 200	Unhealthy
201 - 300	Very Unhealthy
301 and above	Hazardous

1-hr PM_2.5 reading (µg/m³)

MinMaxCurrent

24-hr PSI

MinMaxCurrent

Maps are to be used solely for displaying air quality/hotspot information, and not for any other purpose. All maps are not to scale and are for illustrative purposes only.

PM_2.5 sub-index

MinMaxCurrent

PM₁₀ sub-index

MinMaxCurrent

SO₂ sub-index

MinMaxCurrent

O₃ sub-index

MinMaxCurrent

CO sub-index

MinMaxCurrent

NO₂ sub-index

MinMaxCurrent

Hotspots

The hotspots are derived from satellite data and may be affected by cloud cover and the satellite coverage

Refer to Meteorological Service Singapore for more details

Latest Weather and Haze Situation

Showers and generally cloudy conditions were observed over most parts of the ASEAN region today, except over the northeastern part of the Mekong sub-region and Java where it was relatively drier. Few to isolated hotspots were detected over Sulawesi, the Lesser Sunda Islands, the central parts of Viet Nam, the southern parts of Sumatra and the eastern parts of Kalimantan. Moderate to dense smoke haze was observed in the southern parts of Papua, Sulawesi and Kalimantan. The full extent of the hotspot and smoke haze situation could not be fully determined due to cloud cover.
Updated on 5:33 PM 07 November

Weather and Haze Outlook

For the next few days, showers and cloudy conditions are expected over the ASEAN region. The hotspot and smoke haze situation is likely to remain subdued. Isolated hotspots and localised smoke plumes may still develop in areas facing drier conditions. Over the northern ASEAN region, the prevailing winds are expected to blow from the northeast to east while the prevailing winds over the southern ASEAN region are forecast to be light and variable in direction.
Updated on 5:33 PM 07 November