Jakarta's Air Quality on Night of April 17 is the Worst in Indonesia

Jakarta'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 Friday (April 17, 2026) at 6:00 PM WIB, it was revealed that Jakarta's air quality index is 145.

According to KLHK's 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: 12 Million Indonesians Affected by Natural Disasters in 2025)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an ISPU in the 0-50 range indicates good air quality, 51-100 means moderate air quality, and 101-200 indicates unhealthy air that is harmful to humans, animals, and plants.

Next, an ISPU in the 201-300 range indicates very unhealthy air that can increase health risks for sensitive groups. Meanwhile, an ISPU above 300 indicates hazardous air quality that can seriously harm health and requires immediate action.

Following Jakarta, Riau ranks second with the worst air quality in Indonesia with an index of 98. Then, West Java is in third place with an air quality index of 89.

This means no region has hazardous air quality.

Below is the list of the 10 provinces with the worst air quality index in Indonesia on Friday, April 17, 2026 at 6:00 PM WIB.

1. Jakarta: 145

2. Riau: 98

3. West Java: 89

4. Aceh: 88

5. West Sumatra: 87

6. Jambi: 84

7. Central Kalimantan: 82

8. South Sulawesi: 81

9. East Kalimantan: 76

10. Banten: 74

(Read: 12 Million Indonesians Affected by Natural Disasters in 2025)