West Sumatra's Air Quality This Morning (1/11) is the Worst in Indonesia

The air quality in West Sumatra this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (1/11/2025) at 08:00 AM WIB, it was revealed that West Sumatra's air quality index was 96.

According to the Directorate of Air Pollution Control of KLHK, ISPU is a dimensionless number used to describe ambient air quality conditions at a specific location and is 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, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of these air pollutant parameters are spread across 72 stations in various regions.

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Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution 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 over 300 can seriously harm health and requires quick action.

Below West Sumatra, Banten ranks second worst in Indonesia with an air quality index of 95. Then, in third place is Riau Islands with an air quality index of 94.

This means that no region has hazardous air quality.

Here is the list of 10 provinces with the worst air quality index in Indonesia on Saturday, November 1, 2025, at 08:00 AM WIB.

1. West Sumatra: 96

2. Banten: 95

3. Riau Islands: 94

4. North Sumatra: 91

5. Aceh: 87

6. South Sumatra: 84

7. West Java: 83

8. Riau: 82

9. North Sumatra: 80

10. East Java: 77

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