Riau Has Worst Air Pollution in Indonesia This Morning (5/5)
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Riau recorded the worst air quality in Indonesia this morning. Based on the Air Pollution Standard Index (ISPU) from the Ministry of Environment and Forestry at 08:00 WIB Tuesday 5 May 2026, Riau's air quality index scored 98.
Per KLHK Air Pollution Control Directorate, ISPU is a unitless index describing ambient air quality, measured from 7 pollutant parameters across 72 monitoring stations. 0-50 = Good, 51-100 = Moderate, >100 = Unhealthy levels. Following Riau: West Sumatra (91), South Sumatra (89), West Java (88), Aceh (87), North Sumatra (85), South Sulawesi (79), Central Kalimantan (78), Banten (74), East Java (71). All recorded values remained below hazardous thresholds.
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