Jakarta's Air Pollution on Night of April 21 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 Tuesday (April 21, 2026) at 6:00 PM WIB, it was revealed that Jakarta's air quality index is 127.

According to KLHK's 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: 4.8 M Earthquake Shakes 219 Km East of Levuka,)

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 harms 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 Jakarta, Banten ranks second worst in Indonesia with an air quality index of 103. Then, East Java ranks third with an air quality index of 102.

This means there are no regions with hazardous air quality.

Below is the list of the 10 provinces with the worst air quality index in Indonesia on Tuesday, April 21, 2026 at 6:00 PM WIB.

1. Jakarta: 127

2. Banten: 103

3. East Java: 102

4. West Java: 101

5. Riau: 99

6. Jambi: 93

7. Lampung: 89

8. West Sumatra: 87

9. Aceh: 85

10. South Sulawesi: 80

(Read: 4.8 M Earthquake Shakes 219 Km East of Levuka,)