Indonesia · Central Sulawesi · 2 cities
Air quality in Central Sulawesi today The AQI right now, city by city
Right now, Toli-Toli has the cleanest air of the 2 cities we track in Central Sulawesi (AQI 18, Good), and Palu the worst (AQI 49, Good). Toli-Toli has the most tree cover, at 56.5% — #7 of 155 cities measured in Indonesia.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
- cities tracked
- 2
- average tree cover
- 34.1%
- Indonesia: 28.0%
- worst air now: Palu
- 49
- cleanest air now: Toli-Toli
- 18
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous, and it reads differently from Indonesia's ISPU. Measured by Airleaf, refreshed hourly.
Central Sulawesi
Air quality today across Central Sulawesi, city by city
| Palu | 49Good | 11.7% | 57.5K | #141 of 155 |
|---|---|---|---|---|
| Toli-Toli | 18Good | 56.5% | — | #7 of 155 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in Indonesia.
Is this the same as Indonesia's ISPU?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. Indonesia's official index is the ISPU (Indeks Standar Pencemar Udara), published by the environment ministry from its own monitoring stations. Its bands are 0–50 Baik (good), 51–100 Sedang (moderate), 101–200 Tidak Sehat (unhealthy), 201–300 Sangat Tidak Sehat (very unhealthy) and over 300 Berbahaya (hazardous). The two indexes use different breakpoints and averaging times, so the same air can score differently on each.
Deforestation · 2001–2025
How much forest has Central Sulawesi lost?
Since 2001, Central Sulawesi has lost about 852,000 hectares of forest (about 8,500 km²): 16% of the forest it had in 2000. Most of it (61%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
- Forest lost since 2001
- 852,000 haabout 8,500 km²
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 518,000 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 11,200 ha | 5,780 ha | 17,000 ha |
| 2002 | 18,900 ha | 13,300 ha | 32,200 ha |
| 2003 | 9,370 ha | 10,300 ha | 19,700 ha |
| 2004 | 25,600 ha | 13,800 ha | 39,400 ha |
| 2005 | 10,100 ha | 7,580 ha | 17,700 ha |
| 2006 | 19,000 ha | 11,000 ha | 30,000 ha |
| 2007 | 11,900 ha | 7,900 ha | 19,800 ha |
| 2008 | 11,300 ha | 4,840 ha | 16,100 ha |
| 2009 | 37,800 ha | 12,800 ha | 50,600 ha |
| 2010 | 14,500 ha | 6,260 ha | 20,700 ha |
| 2011 | 19,000 ha | 6,310 ha | 25,300 ha |
| 2012 | 25,400 ha | 10,600 ha | 36,000 ha |
| 2013 | 19,000 ha | 8,750 ha | 27,700 ha |
| 2014 | 30,300 ha | 14,900 ha | 45,200 ha |
| 2015 | 43,900 ha | 46,700 ha | 90,600 ha |
| 2016 | 27,600 ha | 45,000 ha | 72,600 ha |
| 2017 | 22,500 ha | 13,500 ha | 36,100 ha |
| 2018 | 22,400 ha | 14,000 ha | 36,500 ha |
| 2019 | 29,400 ha | 14,700 ha | 44,000 ha |
| 2020 | 16,800 ha | 9,040 ha | 25,900 ha |
| 2021 | 13,900 ha | 7,590 ha | 21,500 ha |
| 2022 | 14,200 ha | 9,490 ha | 23,700 ha |
| 2023 | 27,900 ha | 14,300 ha | 42,200 ha |
| 2024 | 16,900 ha | 11,200 ha | 28,000 ha |
| 2025 | 18,900 ha | 14,900 ha | 33,700 ha |
Forest loss is slowing down: about 29,800 hectares a year in 2021–2025, down from 43,000 hectares a year in 2016–2020. The worst year was 2015, when about 90,600 hectares of forest were lost.
What is causing deforestation in Central Sulawesi?
- Farms, pasture and plantationscleared for good58% · 493,000 ha
- Shifting farmingcan grow back23% · 196,000 ha
- Wildfirescan grow back8.6% · 73,500 ha
Also: logging, mining and energy, storms, floods and other natural causes, towns and roads, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. How it's measured
Other provinces in Indonesia
Clean-air buying guides
Cleaner air at home in Central Sulawesi
Picked by tested clean-air delivery rate (CADR), noise and running cost, from independent test labels. No brand pays to be listed.
- The best air purifiers for wildfire smoke and smog
Air purifiers that keep up with wildfire smoke and winter smog, ranked by verified smoke CADR, with the room each one clears on a smoky day.
- The best air purifiers for bedrooms: quiet picks sized for your room
Quiet HEPA air purifiers for bedrooms, compared on what matters at night: noise on the lowest setting (from 20 dB), verified room size and filter cost.
- The best air purifiers under $200
Good HEPA air purifiers under $200 at the makers' own prices, compared on verified clean air, room size and what the filters cost each year.
Your own street