10 Most Polluted Regions in Indonesia This Morning (March 4)

South Sumatra has the worst air quality in Indonesia this morning. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (March 4, 2026) at 08:00 WIB, it was revealed that the air quality index in South Sumatra is 96.

According to the KLHK 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: Hundreds of Natural Disasters Occur Until Early April 2024, Floods Are the Most Common)

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

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

Below South Sumatra, West Kalimantan ranks second worst in Indonesia with an air quality index of 93. Then, North Sumatra ranks third with an air quality index of 91.

This means that no region has hazardous air quality.

Below is the list of 10 provinces with the worst air quality index in Indonesia on Wednesday, March 4, 2026 at 08:00 WIB.

1. South Sumatra: 96

2. West Kalimantan: 93

3. North Sumatra: 91

4. Jambi: 90

5. Riau: 87

6. Aceh: 85

7. West Java: 83

8. Lampung: 74

9. North Sumatra: 71

10. East Java: 70

(Read: Hundreds of Natural Disasters Occur Until Early April 2024, Floods Are the Most Common)