10 Most Polluted Regions in Indonesia Tonight (16/9)
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Air quality in Central Kalimantan is the worst in Indonesia tonight. According to the Ministry of Environment and Forestry (KLHK) Air Pollution Standard Index (ISPU) page as of Wednesday (16/09/2026) at 18:00 WIB, Central Kalimantan recorded an air quality index value of 928.
Per KLHK Air Pollution Control Directorate, ISPU is a unitless index describing ambient air quality at a location, assessed based on impacts on human health, aesthetics, and other living organisms.
ISPU is calculated from 7 air pollutant measurement parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC, monitored across 72 regional monitoring stations.
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Under KLHK Ministerial 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 (serious health risks requiring immediate response).
After Central Kalimantan: South Kalimantan ranks 2nd worst at 621, followed by West Kalimantan at 429. All three top regions fall under Hazardous air quality.
Full ranking as of 16 Sep 2026 18:00 WIB:
1. Central Kalimantan: 928
2. South Kalimantan: 621
3. West Kalimantan: 429
4. Jambi: 274
5. South Sumatra: 237
6. Riau: 173
7. South Sumatra: 158
8. West Sumatra: 153
9. Aceh: 140
10. East Kalimantan: 133
"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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