10 Most Polluted Regions in Indonesia Tonight (31/10)
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Central Kalimantan has the worst air quality in Indonesia tonight. Based on the Ministry of Environment and Forestry (KLHK) Air Pollution Standard Index (ISPU) page at 18:00 WIB on Saturday (31/10/2026), Central Kalimantan recorded an air quality index value of 253.
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 is calculated from 7 air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, HC, monitored across 72 stations nationwide.
(Read: Burnt Forest Area for 6 Priority Provinces, Central Kalimantan Worst Affected (12 October 2026))
Per KLHK Regulation No.14/2020: ISPU 0-50 = Good; 51-100 = Moderate; 101-200 = Unhealthy; 201-300 = Very Unhealthy (elevated risk for sensitive groups); >300 = Hazardous requiring emergency response.
Following Central Kalimantan: West Sumatra ranked 2nd (252), South Sumatra 3rd (181). No regions reached hazardous levels.
Full ranking of 10 provinces with worst air quality at 18:00 WIB 31 Oct 2026:
1. Central Kalimantan: 253
2. West Sumatra: 252
3. South Sumatra: 181
4. North Sulawesi: 162
5. Jambi: 160
6. East Kalimantan: 151
7. South Kalimantan: 135
8. West Kalimantan: 97
9. East Java: 94
10. Banten: 93
(Read: Burnt Forest Area for 6 Priority Provinces, Central Kalimantan Worst Affected (12 October 2026))
"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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