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Air quality now: AQI18Good, Toli-Toli

City report · Central Sulawesi, Indonesia

Toli-Toli Air quality today

Air quality in Toli-Toli currently reads AQI 18 (Good): Air quality is satisfactory for everyone.

AQI 18

Air quality right now

Good

Main pollutant: PM2.5
PM2.5, fine particles (µg/m³)
3.2
tree cover
56.5%
trees in this area
146K
more trees needed
0

Measured across a 2 km radius around Kecamatan Baolan, Sulawesi Tengah, Indonesia (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.

Toli-Toli · AQI 18 (Good)

Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 25, 2026

Toli-Toli's tree count comes to 145,550 trees across 10.31 km² of land, already at or above the 30% tree-cover level considered healthy for this area.

Air quality detail

Air quality in Toli-Toli today: AQI 18, Good

Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.

Model estimate · no ground station nearby

Health signal

Air quality is satisfactory for everyone.

PM2.5

3.2

PM10

3.4

NO₂

1.2

O₃

29.0

SO₂

0.6

CO

163.0

Outdoor exercise
A good day to be active outside
Windows
Open them to air the house
Mask
Not needed
Air purifier
Not needed

Over the last 7 days, the CAMS air-quality model put Toli-Toli's daily AQI at 36 on average, from 20 on Nov 11 to an hourly peak of 85 on Nov 5.

Last 7 daysavg 36 · peak 85
Nov 5: AQI 66 (peak 85)Nov 6: AQI 49 (peak 63)Nov 7: AQI 38 (peak 54)Nov 8: AQI 29 (peak 51)Nov 9: AQI 25 (peak 42)Nov 10: AQI 24 (peak 42)Nov 11: AQI 20 (peak 26)
Nov 5Nov 11

This is the US EPA AQI. How it differs from Indonesia's ISPU

Where Toli-Toli stands: the most polluted cities in the world right now · the cleanest

Tree cover detail

Tree cover in Toli-Toli: Healthy tree cover

56.5% tree cover against a 30% healthy-neighborhood target, across 10.31 km² of land.

Target reached

Trees in this area

145,550

Target trees

145,550

More trees needed

0

CO₂ if planted / yr

0 kg

Deforestation · 2001–2025

How much forest has Toli-Toli lost?

Since 2001, the area within 10 km of Toli-Toli has lost about 2,410 hectares of forest (about 3,400 football pitches): 12% of the forest it had in 2000. Most of it (62%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.

Satellite image of the area around Toli-Toli, August 2017

2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km southeast of the city center.

Forest lost since 2001
2,410 haabout 3,400 football pitches
Share of its forest
12%of what there was in 2000
Cleared for good
1,490 hadeforestation: turned into farms, mines or towns

Forest loss has stayed about the same: about 109 hectares a year in 2021–2025, against 145 hectares a year in 2016–2020. The worst year was 2016, when about 256 hectares of forest were lost.

Forest lost each year around Toli-Toli, 2001–2025

Hectares of forest lost each year

Forest lost each year around Toli-Toli, 2001–2025. Use the left and right arrow keys to read each year.256

Show the figures as a table
Forest lost each year around Toli-Toli, 2001–2025
YearCleared for goodCan grow backTotal
200179 ha24 ha103 ha
200242 ha38 ha80 ha
200314 ha27 ha41 ha
200429 ha33 ha62 ha
200524 ha11 ha35 ha
200656 ha47 ha103 ha
200715 ha16 ha31 ha
200853 ha21 ha74 ha
200945 ha18 ha63 ha
201021 ha11 ha32 ha
201153 ha13 ha66 ha
201237 ha16 ha53 ha
201336 ha20 ha56 ha
2014106 ha48 ha154 ha
2015100 ha93 ha192 ha
2016175 ha81 ha256 ha
201791 ha80 ha171 ha
201847 ha27 ha75 ha
201999 ha44 ha143 ha
202039 ha42 ha80 ha
202128 ha16 ha44 ha
202238 ha22 ha60 ha
202383 ha34 ha117 ha
202473 ha71 ha144 ha
2025104 ha75 ha179 ha

What is causing deforestation around Toli-Toli?

  • Farms, pasture and plantationscleared for good59% · 1,420 ha
  • Shifting farmingcan grow back34% · 811 ha
  • Loggingcan grow back4% · 97 ha

Also: towns and roads, storms, floods and other natural causes, unknown causes.

Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.

Forest gained and lost, 2000–2020

Forest in 2000
19,700 ha
Forest in 2020
19,200 ha
Overall change
−520 haless forest than in 2000

Comparing satellite maps from 2000 and 2020, the forest around Toli-Toli shrank from about 19,700 hectares to 19,200 hectares, a net loss of about 520 hectares (−2.6%). New forest grew on about 47 hectares, but 567 hectares were lost.

These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.

These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.

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. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured

In the same region

Measured cities near Toli-Toli

Same 2 km radius, same index — so they compare directly.

  • Palu

    Indonesia

    240.9 km
    Tree cover
    12%
    Air quality
    49
  • Gorontalo

    Indonesia

    255.8 km
    Tree cover
    26%
    Air quality
    29
  • Bontang

    Indonesia

    384.0 km
    Tree cover
    28%
    Air quality
    38
  • Kotamobagu

    Indonesia

    389.9 km
    Tree cover
    46%
    Air quality
    56
  • Tarakan

    Indonesia

    438.6 km
    Tree cover
    43%
    Air quality
    12
  • Samarinda

    Indonesia

    442.4 km
    Tree cover
    13%
    Air quality
    93

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Toli-Toli air quality (AQI) and tree cover — measured by Airleaf
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Frequently asked

Questions about Toli-Toli

What is the air quality (AQI) in Toli-Toli right now?

The latest reading for Toli-Toli shows an AQI of 18 (Good), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.

Is it safe to exercise outside in Toli-Toli today?

At AQI 18 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.

What has the air quality in Toli-Toli been like this week?

Over the last 7 days, the CAMS air-quality model put Toli-Toli's daily AQI at 36 on average, from 20 on Nov 11 to an hourly peak of 85 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.

Is Toli-Toli's AQI 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.

How much forest has the area around Toli-Toli lost since 2001?

Since 2001, the area within 10 km of Toli-Toli has lost about 2,410 hectares of forest (about 3,400 football pitches): 12% of the forest it had in 2000. Most of it (62%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss has stayed about the same: about 109 hectares a year in 2021–2025, against 145 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Toli-Toli shrank from about 19,700 hectares to 19,200 hectares, a net loss of about 520 hectares (−2.6%). New forest grew on about 47 hectares, but 567 hectares were lost.

What is the tree count in Toli-Toli?

Toli-Toli has an estimated 145,550 trees across the 10.31 km² of land measured — 56.5% tree cover, already past the 30% tree-cover target set for this area.

How many more trees does Toli-Toli need?

Toli-Toli has already reached its tree-cover target, so no additional trees are needed to close the gap.

How are Toli-Toli's air quality and tree cover measured?

Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Kecamatan Baolan; the tree count is an estimate derived from that cover.

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