City report · Bahia, Brazil
Ilhéus Air quality today
Air quality in Ilhéus currently reads AQI 11 (Good): Air quality is satisfactory for everyone.
AQI 11
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 1.7
- tree cover
- 28.2%
- trees in this area
- 47.6K
- more trees needed
- 3.0K
Measured across a 2 km radius around São Sebastião, Ilhéus - BA, Brazil (12.57 km²), from a satellite image of Oct 31, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ilhéus · AQI 11 (Good)
Ilhéus's tree count comes to 47,574 trees across 6.75 km² of land, 2 points below the 30% tree-cover level considered healthy for this area, so roughly 3,037 more trees would close the gap.
Air quality detail
Air quality in Ilhéus today: AQI 11, Good
Main pollutant: PM2.5 · Observed Nov 10, 21:00 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
1.7
PM10
2.1
NO₂
1.2
O₃
54.0
SO₂
0.3
CO
103.0
- 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 Ilhéus's daily AQI at 36 on average, from 21 on Nov 10 to an hourly peak of 58 on Nov 6.
Where Ilhéus stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ilhéus: Below target
28.2% tree cover against a 30% healthy-neighborhood target, across 6.75 km² of land.
Trees in this area
47,574
Target trees
50,611
More trees needed
3,037
CO₂ if planted / yr
66.8 t
Deforestation · 2001–2025
How much forest has Ilhéus lost?
Since 2001, the area within 10 km of Ilhéus has lost about 985 hectares of forest (about 1,400 football pitches): 8.9% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 985 haabout 1,400 football pitches
- Share of its forest
- 8.9%of what there was in 2000
- Cleared for good
- 965 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 36 hectares a year in 2021–2025, down from 60 hectares a year in 2016–2020. The worst year was 2017, when about 138 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 16 ha | under 1 ha | 16 ha |
| 2002 | 28 ha | under 1 ha | 29 ha |
| 2003 | 18 ha | under 1 ha | 18 ha |
| 2004 | 23 ha | under 1 ha | 23 ha |
| 2005 | 23 ha | under 1 ha | 23 ha |
| 2006 | 12 ha | under 1 ha | 13 ha |
| 2007 | 46 ha | under 1 ha | 46 ha |
| 2008 | 68 ha | under 1 ha | 68 ha |
| 2009 | 24 ha | under 1 ha | 25 ha |
| 2010 | 6 ha | under 1 ha | 6 ha |
| 2011 | 18 ha | under 1 ha | 18 ha |
| 2012 | 44 ha | under 1 ha | 45 ha |
| 2013 | 68 ha | under 1 ha | 68 ha |
| 2014 | 64 ha | under 1 ha | 64 ha |
| 2015 | 44 ha | under 1 ha | 44 ha |
| 2016 | 52 ha | under 1 ha | 53 ha |
| 2017 | 136 ha | 2 ha | 138 ha |
| 2018 | 34 ha | under 1 ha | 35 ha |
| 2019 | 46 ha | under 1 ha | 46 ha |
| 2020 | 28 ha | under 1 ha | 29 ha |
| 2021 | 15 ha | 7 ha | 22 ha |
| 2022 | 35 ha | 2 ha | 37 ha |
| 2023 | 48 ha | under 1 ha | 48 ha |
| 2024 | 30 ha | under 1 ha | 31 ha |
| 2025 | 41 ha | under 1 ha | 41 ha |
What is causing deforestation around Ilhéus?
- Farms, pasture and plantationscleared for good74% · 728 ha
- Towns and roadscleared for good24% · 237 ha
- Shifting farmingcan grow back1.4% · 14 ha
Also: storms, floods and other natural causes, mining and energy, 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
- 9,340 ha
- Forest in 2020
- 9,190 ha
- Overall change
- −154 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ilhéus stayed about the same size, at about 9,190 hectares: new forest grew on about 221 hectares, and about 375 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 Ilhéus
Same 2 km radius, same index — so they compare directly.
- Itabuna26.7 km
Brazil
- Tree cover
- 31%
- Air quality
- 12
- Jequié154.3 km
Brazil
- Tree cover
- 20%
- Air quality
- 14
- Porto Seguro183.6 km
Brazil
- Tree cover
- 54%
- Air quality
- 9
- Eunápolis185.1 km
Brazil
- Tree cover
- 21%
- Air quality
- 35
- Vitória da Conquista194.4 km
Brazil
- Tree cover
- 13%
- Air quality
- 5
- Santo Antônio de Jesus205.0 km
Brazil
- Tree cover
- 18%
- Air quality
- 13
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Frequently asked
Questions about Ilhéus
What is the air quality (AQI) in Ilhéus right now?
The latest reading for Ilhéus shows an AQI of 11 (Good), observed Nov 10, 21:00 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 Ilhéus today?
At AQI 11 (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 Ilhéus been like this week?
Over the last 7 days, the CAMS air-quality model put Ilhéus's daily AQI at 36 on average, from 21 on Nov 10 to an hourly peak of 58 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Ilhéus lost since 2001?
Since 2001, the area within 10 km of Ilhéus has lost about 985 hectares of forest (about 1,400 football pitches): 8.9% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 36 hectares a year in 2021–2025, down from 60 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Ilhéus stayed about the same size, at about 9,190 hectares: new forest grew on about 221 hectares, and about 375 hectares were lost.
What is the tree count in Ilhéus?
Ilhéus has an estimated 47,574 trees across the 6.75 km² of land measured — 28.2% tree cover, 2 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Ilhéus need?
Ilhéus needs roughly 3,037 more trees to close a 2-point shortfall against its 30% tree-cover target — about 66.8 t of extra CO₂ absorbed per year once grown.
How are Ilhéus'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 São Sebastião; the tree count is an estimate derived from that cover.
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