SG Haze WatchLoading the forecast…
📅 Next 7 days
Highest 24-hour PSI of each day (mean of the five NEA regions). Bar: the likely range (8 in 10 chance). Stars: how sure the forecast is. Days far ahead are less sure, because nobody can see future fires. Tap a day to see it.
📡 Right now
Live readings from NEA: the 24-hour PSI and the 1-hour PM2.5 (what you breathe this hour) in each region.
🧪 What is in the air?
💨 Where does the air come from?
Line: the path of the air (about 800 m up, where smoke travels) in the 4 days before it reaches Singapore at 2 pm. Dots: fires seen by satellite on . Open the big map →
⏰ Hour by hour, and the "lid" on our air
Bars: forecast PM2.5 each hour. Line: the height of the lid (the mixing height). At night the lid comes down to about 200 m and squeezes the air into a thin box, so PM2.5 goes up. In the afternoon the sun heats the ground, the lid rises to about 800 m and the air has more room. Touch an hour to see the box.
🔥 Fires in the region
Total fire power seen by the VIIRS satellite each day (GW). More fire power means more smoke. Wind decides if the smoke comes to Singapore.
🎯 How good is this forecast?
Dots: measured daily PM2.5 (mean of the 5 NEA regions). Bars: what the forecast said the night before (likely range).