Air Pollution Wednesday Night (21/10): Central Kalimantan Worst Hit, How Are Other Regions?
- A Small
- A Medium
- A Bigger
Central Kalimantan recorded the worst air quality in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) data from the Ministry of Environment and Forestry (KLHK) as of Wednesday 21 October 2026, 18:00 WIB, Central Kalimantan scored an air quality index value of 1293.
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 and HC, monitored across 72 nationwide measurement stations.
(Read: Countries With Most Active Volcanoes Worldwide: Indonesia Ranks First)
Per KLHK Ministerial Regulation No.14/2020 on Air Pollution Standard Index: 0-50 = Good air quality, 51-100 = Moderate, 101-200 = Unhealthy (harmful for humans, animals, vegetation).
201-300 = Very Unhealthy, elevating health risks for vulnerable groups. Index values above 300 = Hazardous, causing severe health damage requiring immediate emergency response.
Following Central Kalimantan: South Kalimantan placed 2nd worst at index 770, while South Sumatra ranked 3rd with 524.
This means the top three provinces all fall into the Hazardous air quality category.
Below is the full list of 10 worst ranked Indonesian provinces for air quality as of 21 October 2026, 18:00 WIB:
1. Central Kalimantan: 1293
2. South Kalimantan: 770
3. South Sumatra: 524
4. East Kalimantan: 460
5. Jambi: 391
6. Riau: 185
7. North Sulawesi: 165
8. Central Sulawesi: 130
9. West Kalimantan: 123
10. Aceh: 112
(Read: Countries With Most Active Volcanoes Worldwide: Indonesia Ranks First)
"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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