10 Most Polluted Regions in Indonesia This Morning (21/7)
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This morning, Banten has the worst air quality in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) at 08.00 WIB on Tuesday (21/7/2026), Banten recorded an air quality index value of 112.
According to KLHK's Air Pollution Control Directorate, ISPU is a unitless index that describes ambient air quality conditions at a given location, assessed based on impacts on human health, aesthetic values, and other living organisms.
ISPU calculations are based on measurements of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC, monitored across 72 monitoring stations nationwide.
(Read: Number of Damaged Houses Due to Floods and Landslides in Sumatra (17 December 2025))
Per KLHK Minister Regulation No. 14/2020 on Air Pollution Standard Index: ISPU 0-50 = Good air quality; 51-100 = Moderate; 101-200 = Unhealthy, causing adverse effects to humans, animals and plants.
Furthermore, ISPU 201-300 = Very Unhealthy, increasing health risks for sensitive groups. Values above 300 are classified as Hazardous, pose severe health threats requiring immediate response.
After Banten, Riau ranks as the second most polluted region with an index of 99, followed by DKI Jakarta at third place with 97.
No recorded regions fell 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, Tuesday 21 July 2026:
1. Banten: 112
2. Riau: 99
3. DKI Jakarta: 97
4. Aceh: 94
5. South Sumatra: 89
6. West Sumatra: 87
7. West Kalimantan: 84
8. Bengkulu: 81
9. Lampung: 77
10. Central Kalimantan: 76
(Read: Number of Damaged Houses Due to Floods and Landslides in Sumatra (17 December 2025))
"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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