DKI Jakarta Most Polluted in Indonesia This Morning (31/1)

Air quality in DKI Jakarta this morning is the worst in Indonesia. Based on the Air Pollutant Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (31/1/2026) at 08:00 AM WIB, the air quality index in DKI Jakarta was 147.

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

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

(Read: Diseases Experienced by Sumatra Flood Victims as of December 5, 2025)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, an ISPU 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 range of 201-300 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 DKI Jakarta, West Java ranks second worst in Indonesia with an air quality index of 103. Then, in third place is South Sumatra with an air quality index of 101.

This means that no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Saturday, January 31, 2026, at 08:00 AM WIB.

1. DKI Jakarta: 147

2. West Java: 103

3. South Sumatra: 101

4. Riau: 95

5. West Kalimantan: 93

6. Jambi: 89

7. South Kalimantan: 86

8. Aceh: 85

9. North Sumatra: 84

10. Central Kalimantan: 81

(Read: Diseases Experienced by Sumatra Flood Victims as of December 5, 2025)