10 Most Polluted Regions in Indonesia This Morning (18/9)
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South Kalimantan recorded the worst air quality in Indonesia this morning. According to the Ministry of Environment and Forestry (KLHK) Air Pollution Standard Index (ISPU) page as of Friday, 18 September 2026 at 08.00 WIB, South Kalimantan posted an air quality index value of 1534.
Per KLHK Air Pollution Control Directorate, ISPU is a unitless index representing ambient air quality at a location, measured against 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. Measurements are conducted across 72 monitoring stations nationwide.
(Read: Indonesia Has The Most Active Volcanoes In The World)
Under KLHK Minister Regulation No. 14/2020: ISPU 0-50 = Good, 51-100 = Moderate, 101-200 = Unhealthy (harmful to humans, animals, plants).
ISPU 201-300 = Very Unhealthy (elevated risk for sensitive groups); values above 300 = Hazardous, requiring immediate emergency response.
After South Kalimantan, Central Kalimantan ranked 2nd worst at 1062, followed by West Kalimantan at 579 in 3rd place.
All three top-ranked provinces fall into the Hazardous air quality category.
Below is the full list of 10 provinces with the worst air quality in Indonesia at 08.00 WIB, Friday 18 September 2026:
1. South Kalimantan: 1534
2. Central Kalimantan: 1062
3. West Kalimantan: 579
4. East Kalimantan: 313
5. South Sumatra: 289
6. Riau: 204
7. West Sumatra: 193
8. Jambi: 185
9. Central Papua: 179
10. South Sumatra: 141
(Read: Indonesia Has The Most Active Volcanoes In The World)
"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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