10 Regions with the Cleanest Evening Air (31/10) in Indonesia

The air quality in South Lampung Regency this evening is the cleanest in Indonesia. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), South Lampung Regency had a score of 9 on Friday (31/10/2025) at 4:00 PM WIB.

At that time, the air quality in South Lampung Regency was classified as good, meaning the pollutant levels in the air of South Lampung Regency were very minimal. Furthermore, Lamongan Regency ranked second with an air quality index of 14. Next, Nabire Regency was in third place with an air quality index of 17.

Here is the complete list of 10 cities with the cleanest air quality in Indonesia according to KLHK on Friday, October 31, 2025, at 4:00 PM WIB.

1. South Lampung Regency (Lampung): 9
2. Lamongan Regency (East Java): 14
3. Nabire Regency (Central Papua): 17
4. Tarakan (North Kalimantan): 19
5. Bulungan Regency (North Kalimantan): 21
6. Sukabumi Regency (West Java): 23
7. Lumajang Regency (East Java): 25
8. West Kotawaringin Regency (Central Kalimantan): 26
9. Kendari (Southeast Sulawesi): 27
10. Semarang (Central Java): 29

(Read: Concession Areas in Peat Ecosystems Prone to Flooding, Especially Oil Palm Concessions)

Based on KLHK 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 Friday (31/10/2025) at 4:00 PM WIB, all these cities had good air quality.

(Read: Flood Victims in Bali, 9 People Died (Wednesday, September 10, 2025))