South Sumatra's Air Quality on Monday Night (Feb 9) 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 Monday (February 9, 2026) at 6:00 PM WIB, it was revealed that the air quality index in South Sumatra is 100.

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. Pollutant parameter measurements are spread across 72 stations in various regions.

(Read: Number of Slightly Damaged Houses Due to Natural Disasters in Indonesia 2015-2024)

Based on Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means good air quality, the 51-100 range means moderate air quality, and the 101-200 range means 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, Central Kalimantan ranks second worst in Indonesia with an air quality index of 95. Then, North Sumatra ranks third with an air quality index of 93.

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 Monday, February 9, 2026 at 6:00 PM WIB.

1. South Sumatra: 100

2. Central Kalimantan: 95

3. North Sumatra: 93

4. Jambi: 89

5. Aceh: 85

6. North Sumatra: 80

7. Lampung: 74

8. South Sulawesi: 70

9. Central Java: 69

10. South Kalimantan: 68

(Read: Number of Slightly Damaged Houses Due to Natural Disasters in Indonesia 2015-2024)