10 Most Polluted Regions in Indonesia Tonight (30/9)
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Central Kalimantan has the worst air quality in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) page from the Ministry of Environment and Forestry (KLHK) on Wednesday (30/9/2026) at 18:00 WIB, Central Kalimantan recorded an air quality index value of 3883.
According to KLHK Air Pollution Control Directorate, ISPU is a unitless index describing 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, NO2, SO2, CO, O3, HC, measured across 72 monitoring stations nationwide.
(Read: Indonesia Had the Worst Air Quality in ASEAN in 2022)
Per KLHK Ministerial Regulation No.14/2020: ISPU 0-50 = Good, 51-100 = Moderate, 101-200 = Unhealthy, 201-300 = Very Unhealthy, >300 = Hazardous requiring emergency response.
Following Central Kalimantan: South Sumatra ranked 2nd (520), Jambi 3rd (387) — all three are in Hazardous category.
Full ranking at 18:00 WIB 30 Sep 2026:
1. Central Kalimantan: 3883
2. South Sumatra: 520
3. Jambi: 387
4. South Kalimantan: 272
5. Riau: 222
6. East Kalimantan: 156
7. DKI Jakarta: 150
8. West Kalimantan: 143
9. North Sumatra: 126
10. Banten: 117
(Read: Indonesia Had the Worst Air Quality in ASEAN in 2022)
"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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