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An in-depth look at the air quality data for Causeway Bay

Causeway Bay

Roadside Monitoring Station

	Concentration µg/m³	AQG multiple
PM_2.5	37.3	2.49 ×	Extreme
PM₁₀	45.5	1.01 ×	Moderate
O₃	3.9	0.04 ×
NO₂	93.2	3.73 ×	Extreme
SO₂	10.2	0.26 ×
Data recorded: 9:00 PM on Apr 4, 2026

PM_2.5

PM₁₀

O₃

NO₂

SO₂