NGO warns hot weather can worsen air quality, urges gov’t action on pollutants and cooling measures in hot districts

NGO warns hot weather can worsen air quality, urges gov’t action on pollutants and cooling measures in hot districts

NGO Green Power has urged the Hong Kong government to better regulate ozone precursors as hot weather exacerbates air pollution across the city. A heatwave in Hong Kong in late May 2026. Photo: Kyle Lam/HKFP. Chemical compounds – such as nitrogen oxides, methane, Volatile Organic Compounds (VOC) and carbon monoxide – form ground-level ozone by reacting in the lower atmosphere in the presence of sunlight. Ground-level ozone attacks and inflames l…