10 Regions with the Cleanest Air Quality in Indonesia, Rembang Regency Ranks Number 1 This Morning

Rembang Regency's air quality this morning is the cleanest in Indonesia. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), Rembang Regency had a score of 6 on Wednesday (12/11/2025) at 06:00 AM WIB.

At that time, Rembang Regency's air quality was classified as good, meaning the pollutant levels in Rembang Regency's air were very minimal. Furthermore, Madiun Regency ranked second with an air quality index of 13. Next, Banda Aceh was in third place with an air quality index of 15.

Here is the complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Wednesday, November 12, 2025, at 06:00 AM WIB.

1. Rembang Regency (Central Java): 6
2. Madiun Regency (East Java): 13
3. Banda Aceh (Aceh): 15
4. West Kutai Regency (East Kalimantan): 17
5. Palu (Central Sulawesi): 19
6. Tarakan (North Kalimantan): 20
7. South Lampung Regency (Lampung): 22
8. Purwakarta Regency (West Java): 24
9. Mataram (West Nusa Tenggara): 25
10. West Kotawaringin Regency (Central Kalimantan): 26

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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 Wednesday (12/11/2025) at 06:00 AM WIB, all these cities had good air quality.

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