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haze
haze Haze over Ampang, Malay.

Haze

meteorology
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News •

Quick-dash shoppers affecting Johor traders as haze alters consumer behaviour • Oct. 22, 2026, 10:20 PM ET (Straits Times)
‘We’re breathing in the smoke even as we sleep’: Living with haze in Sumatra • Oct. 22, 2026, 8:00 PM ET (Straits Times)
Haze in Malaysia: Vets seeing uptick in pets with respiratory problems • Oct. 18, 2026, 8:41 PM ET (Straits Times)
Haze from forest fires still blankets Sumatra, Batam islands • Oct. 18, 2026, 8:20 PM ET (Straits Times)
Haze triggers highest-level alert in Southeast Asia • Oct. 17, 2026, 12:00 PM ET (Taipei Times)

Haze, suspension in the atmosphere of dry particles of dust, salt, aerosols, or photochemical smog that are so small (with diameters of about 0.1 micron [0.00001 cm]) that they cannot be felt or seen individually with the naked eye, but the aggregate reduces horizontal visibility and gives the atmosphere an opalescent appearance. Haze appears as a bluish or yellowish veil depending on whether the background is dark or light, respectively. With respect to these colours, haze can be discriminated from mist, which gives a grayish cast to the sky.

This article was most recently revised and updated by John P. Rafferty.