Riau Air Quality Evening (1/5): Worst in Indonesia
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Riau recorded the worst air quality in Indonesia this evening. Based on the Air Pollution Standard Index (ISPU) data from the Ministry of Environment and Forestry (KLHK) as of Friday, 1 May 2026 at 18:00 WIB, Riau's air quality index scored 94.
According to KLHK Air Pollution Control Directorate, ISPU is a unitless index representing ambient air quality at a location, measured by impacts on human health, aesthetics, and other living organisms.
ISPU calculation uses 7 air pollutant parameters: PM10, PM2.5, NO?, SO?, CO, O?, HC, monitored across 72 nationwide monitoring stations.
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Per KLHK Regulation No.14/2020: ISPU 0-50 = Good, 51-100 = Moderate, 101-200 = Unhealthy (harmful to humans, animals, plants), 201-300 = Very Unhealthy (elevated risk for sensitive groups), >300 = Hazardous (requires emergency response).
Following Riau: 2. West Sumatra (91), 3. South Sumatra (88), 4. Jambi (85), 5. Aceh (84), 6. West Java (83), 7. South Sulawesi (79), 8. East Kalimantan (75), 9. Banten (73), 10. East Java (71). No locations reached hazardous levels.
"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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