10 Most Polluted Regions in Indonesia Tonight (18/9)
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Central Kalimantan has the worst air quality in Indonesia tonight. According to the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) as of Friday, 18 September 2026 at 18:00 WIB, the air quality index for Central Kalimantan was recorded at 1042.
Per 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, and HC, measured across 72 monitoring stations nationwide.
(Read: 4.5 M Magnitude Earthquake Shakes 14 Km North of San Carlos)
Under Environment Minister Regulation No.14/2020: ISPU 0-50 = Good air quality; 51-100 = Moderate; 101-200 = Unhealthy (harmful to humans, animals, plants).
ISPU 201-300 = Very Unhealthy (elevated health risk for sensitive groups); values >300 = Hazardous (severe health risk requiring immediate response).
After Central Kalimantan: 2nd place South Kalimantan (525), 3rd place East Kalimantan (450) — all three top provinces fall into the Hazardous air quality category.
Full ranking of 10 worst air quality provinces at the recorded time:
1. Central Kalimantan: 1042
2. South Kalimantan: 525
3. East Kalimantan: 450
4. Jambi: 321
5. West Kalimantan: 293
6. South Sumatra: 266
7. Riau: 199
8. Central Papua: 194
9. South Sumatra: 147
10. Lampung: 119
(Read: 4.5 M Magnitude Earthquake Shakes 14 Km North of San Carlos)
"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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