South Sumatra's Nighttime Air Quality (Feb 13) is the Worst in Indonesia

South Sumatra's air quality tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Friday (February 13, 2026) at 6:00 PM WIB, it was revealed that the air quality index in South Sumatra is 102.

According to KLHK's Air Pollution Control Directorate, ISPU is a unitless number used to describe ambient air quality conditions at a specific location and is based on impacts on human health, aesthetic value, and other living beings.

ISPU calculations are based on measurements 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: 2,000 Natural Disasters Hit Indonesia in 2024, Floods Dominated)

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

Next, air quality in the 201-300 range is very unhealthy and can increase health risks for sensitive groups. Meanwhile, air quality in the range above 300 is hazardous, can seriously harm health, and requires immediate handling.

Below South Sumatra, Banten ranks second worst in Indonesia with an air quality index of 95. Then, Riau is third with an air quality index of 93.

This means no region has hazardous air quality.

Below is the list of 10 provinces with the worst air quality index in Indonesia on Friday, February 13, 2026 at 6:00 PM WIB.

1. South Sumatra: 102

2. Banten: 95

3. Riau: 93

4. Jambi: 91

5. Aceh: 89

6. West Kalimantan: 84

7. West Java: 83

8. North Sumatra: 79

9. South Sulawesi: 78

10. Lampung: 74

(Read: 2,000 Natural Disasters Hit Indonesia in 2024, Floods Dominated)