North Sumatra's Air Quality Worst in Indonesia Friday Morning (9/1)

North Sumatra's air quality is the worst in Indonesia this morning. Based on the Air Pollutant Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Friday (9/1/2026) at 08:00 AM WIB, it was revealed that the air quality index in North Sumatra was 79197.

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

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

(Read: Area of Rice Fields, Land, and Plantations in Indonesia Damaged by Floods 2020-2024)

Based on Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, an ISPU range of 0-50 indicates good air quality, 51-100 means 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 201-300 range can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range of more than 300 can seriously harm health and requires prompt action.

Below North Sumatra, South Sumatra ranks second worst in Indonesia with an air quality index of 109. Then, in third place is Riau with an air quality index of 104.

This means North Sumatra has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Friday, January 9, 2026, at 08:00 AM WIB.

1. North Sumatra: 79197

2. South Sumatra: 109

3. Riau: 104

4. Jambi: 102

5. Banten: 95

6. Aceh: 94

7. North Sumatra: 92

8. West Sumatra: 87

9. East Kalimantan: 74

10. South Sulawesi: 72

(Read: Area of Rice Fields, Land, and Plantations in Indonesia Damaged by Floods 2020-2024)