Riau Night Air Pollution (4/5) Worst in Indonesia

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Irfan Fadhlurrahman 04/05/2026 19:28 WIB
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10 Provinces with Worst Air Quality in Indonesia as of May 4, 2026 18:00 WIB
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Riau has the worst air quality in Indonesia tonight. According to the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) at 18:00 WIB on Monday (4/5/2026), Riau recorded an air quality index score of 95.

Per KLHK Air Pollution Control Directorate, ISPU is a unitless index describing ambient air quality at a location, rated based on impacts on human health, aesthetic values, and other living organisms.

ISPU calculation uses measurements of 7 air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements are taken across 72 monitoring stations nationwide.

"Disclosure: This is an AI-generated translation of the original article. We strive for accuracy, but please note that automated translations may contain errors or slight inconsistencies."

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