10 Least Air Polluted Regions in Indonesia, Monday Morning Morowali Regency Ranks 1st

Morowali Regency''s air quality is the cleanest in Indonesia this morning. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), Morowali Regency has a score of 10 on Monday (1/9/2025) at 06.00 AM WIB.

At that time, Morowali Regency''s air quality was classified as good, meaning the pollutant levels in Morowali Regency''s air were very minimal. Furthermore, Lumajang Regency ranked second with an air quality index of 13. Next, Pelalawan Regency was in third place with an air quality index of 16.

Here is the complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Monday, September 1, 2025 at 06.00 AM WIB.

1. Morowali Regency (Central Sulawesi): 10
2. Lumajang Regency (East Java): 13
3. Pelalawan Regency (Riau): 16
4. Madiun Regency (East Java): 17
5. West Manggarai Regency (East Nusa Tenggara): 19
6. Palu (Central Sulawesi): 20
7. Balikpapan (East Kalimantan): 21
8. Probolinggo (East Java): 23
9. Sukabumi Regency (West Java): 24
10. North Penajam Paser Regency (East Kalimantan): 25

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Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, KLHK applies the following air quality index classification.

• 0-50: good
• 51-100: moderate
• 101-200: unhealthy
• 201-300: very unhealthy
• 300+: hazardous

This means that on Monday (1/9/2025) at 06.00 AM WIB, all these cities had good air quality.

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