South Sumatra's Air Quality Tonight (14/1) is the Worst in Indonesia

Air quality in South Sumatra tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (January 14, 2026) at 6:00 PM WIB, it was revealed that the air quality index in South Sumatra was 102.

According to the Directorate of Air Pollution Control of KLHK, ISPU is a unitless number used to describe ambient air quality conditions at a specific location, based on its impact on human health, aesthetic value, and other living things.

ISPU calculation is based on the measurement results of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: Kurious Survey: Many People Feel Indonesia's Air Quality is Poor)

Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the range of 0-50 indicates good air quality, 51-100 indicates moderate air quality, and 101-200 indicates unhealthy air quality that is detrimental to humans, animals, and plants.

Furthermore, very unhealthy air quality in the range of 201-300 can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range of over 300 can seriously harm health and requires quick action.

Below South Sumatra, Banten occupies the second-worst position in Indonesia with an air quality index of 95. Then, in the third position is Jambi with an air quality index of 91.

This means no region has hazardous air quality.

Here is the list of 10 provinces with the worst air quality index in Indonesia on Wednesday, January 14, 2026, at 6:00 PM WIB.

1. South Sumatra: 102

2. Banten: 95

3. Jambi: 91

4. West Sumatra: 87

5. North Sumatra: 79

6. Lampung: 74

7. East Kalimantan: 71

8. South Sulawesi: 70

9. North Sumatra: 69

10. Central Kalimantan: 68

(Read: Kurious Survey: Many People Feel Indonesia's Air Quality is Poor)