SHAH ALAM, Oct 23 — Negeri Sembilan’s Nilai logged Malaysia’s highest Air Pollutant Index (API) reading at 160 as of 10pm, followed by nearby Seremban at 159 and Kuala Lumpur’s Batu Muda at 158.
According to the API Management System (APIMS) portal, five out of Selangor’s six stations recorded unhealthy scores, namely, Klang (153), Johan Setia (151), Petaling Jaya (137), Shah Alam (112), and Banting (106). The remaining station in Kuala Selangor had a moderate API reading of 78.
Elsewhere in the Klang Valley, Putrajaya logged an API reading of 106 while Kuala Lumpur’s Cheras recorded a 99 score.
Of Malaysia’s 68 air quality monitoring stations, 19 logged unhealthy API readings while 46 had moderate scores. Three had good air quality — Terengganu’s Kemaman (44) and Besut (36), and Kedah’s Langkawi (43).
API readings fall into five categories: good (0 to 50), moderate (51 to 100), unhealthy (101 to 200), very unhealthy (201 to 300), and hazardous (301 and above).






