Lampung's Nighttime Air Quality (April 20) is the Worst in Indonesia

Lampung'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 Monday (20/4/2026) at 18:00 WIB, it was revealed that Lampung's air quality index is 94.

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. Air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: Indonesia Has the Most Active Volcanoes in the World)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means 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 Lampung, Jambi ranks second worst in Indonesia with an air quality index of 88. Then, Aceh ranks third with an air quality index of 86.

This means that no region has hazardous air quality.

Below is the list of 10 provinces with the worst air quality index in Indonesia on Monday, 20 April 2026 at 18:00 WIB.

1. Lampung: 94

2. Jambi: 88

3. Aceh: 86

4. West Java: 85

5. East Java: 79

6. Central Kalimantan: 78

7. Banten: 77

8. North Sumatra: 71

9. Central Java: 68

10. Bengkulu: 63

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