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Version 1.6.2, 24 Oct 2026

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Haze Lahupdated 6 min ago

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Forecast

Worst Tuesday around 4pm, near 81 µg/m³.

Best window: tomorrow 7–10am. For the next 6 hours, today's reading is the better guide.

Next 48 hours

PM2.5 µg/m³, island-wide

Tuesday 4pm PM2.5 81 (48–134) 77% above 55

Copernicus 47

Rain 94%

Tuesday 4pm, PM2.5 81 (48–134), 77% above 55. Copernicus 47. Rain 94%

Solid: measured. Dashed: forecast. Shade: likely range. PM2.5 forecast: Copernicus CAMS, calibrated to NEA readings.

Next 5 days

Today
Cut back outdoorsRain 69% · 18 mm · gusts 26 km/h100% chance above 55
PSI 120
Tmrw
Go aheadRain 65% · 4 mm · gusts 22 km/h6% chance above 55
PSI 82
Tue
Go aheadRain 96% · 15 mm · gusts 19 km/h77% chance above 55
PSI 88
Wed
Go aheadRain 100% · 18 mm · gusts 20 km/h40% chance above 55
PSI 97
Thu
Go aheadRain 100% · 19 mm · gusts 28 km/h9% chance above 55
PSI 77

How sure we are

Average error, µg/m³

This siteCopernicusNo change

From 24 hours ahead, this forecast beats both Copernicus and assuming no change.

Today: Copernicus × 1.8, typical error ±43%.

How we measure this

Last 7 days

Peak 24-hr PSI

161
142
140
122
116
154
150

This week's peak 161 is the highest since 2015 (peak 322). NEA data

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