Air Pollution Saturday Night (Feb 7): North Sumatra Worst, How About Other Regions?

North Sumatra has the worst air quality in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (February 7, 2026) at 18.00 WIB, the air quality index in North 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, 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: Jakarta Flood Points Distribution (January 23, 2026 at 07.00 WIB))

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 means unhealthy air quality 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 North Sumatra, Banten ranks second worst in Indonesia with an air quality index of 95. Then, Jambi ranks third with an air quality index of 88.

This means that no region has hazardous air quality.

Here is the list of 10 provinces with the worst air quality index in Indonesia on Saturday, February 7, 2026 at 18.00 WIB.

1. North Sumatra: 96

2. Banten: 95

3. Jambi: 88

4. South Sumatra: 87

5. Aceh: 85

6. West Java: 83

7. North Sumatra: 79

8. South Sulawesi: 74

9. Central Java: 69

10. South Kalimantan: 68

(Read: Jakarta Flood Points Distribution (January 23, 2026 at 07.00 WIB))