Air Pollution Wednesday Night (28/1): Banten Worst, How About Other Regions?

Air quality in Banten tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (28/1/2026) at 6:00 PM WIB, it was revealed that Banten's air quality index was 95.

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

APSI calculation is based on the measurement results of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of air pollutant parameters are spread across 72 stations in various regions.

(Read: Volcanic Eruption Trends in Recent Years)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an APSI in the 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.

Next, 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 quick handling.

Below Banten, South Sumatra occupies the second-worst position in Indonesia with an air quality index of 92. Then, in third place is Riau with an air quality index of 90.

This means no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Wednesday, January 28, 2026, at 6:00 PM WIB.

1. Banten: 95

2. South Sumatra: 92

3. Riau: 90

4. Jambi: 89

5. Aceh: 88

6. South Kalimantan: 86

7. North Sumatra: 83

8. West Nusa Tenggara: 78

9. North Sumatra: 77

10. Central Kalimantan: 75

(Read: Volcanic Eruption Trends in Recent Years)