City report · Goiás, Brazil
Formosa Air quality today
Air quality in Formosa currently reads AQI 11 (Good): Air quality is satisfactory for everyone.
AQI 11
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 2.1
- tree cover
- 14.4%
- trees in this area
- 45.2K
- more trees needed
- 49.0K
Measured across a 2 km radius around St. Centro Nordeste, Formosa - GO, Brazil (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Formosa · AQI 11 (Good)
Formosa's tree count comes to 45,239 trees across 12.57 km², 16 points below the 30% tree-cover level considered healthy for this area, so roughly 49,009 more trees would close the gap.
Air quality detail
Air quality in Formosa today: AQI 11, Good
Main pollutant: PM2.5 · Observed Nov 11, 06:00 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
2.1
PM10
2.4
NO₂
2.7
O₃
41.0
SO₂
0.3
CO
105.0
- 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 Formosa's daily AQI at 27 on average, from 11 on Nov 10 to an hourly peak of 75 on Nov 5.
Where Formosa stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Formosa: Critically low
14.4% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
45,239
Target trees
94,248
More trees needed
49,009
CO₂ if planted / yr
1,078 t
Deforestation · 2001–2025
How much forest has Formosa lost?
Since 2001, the area within 10 km of Formosa has lost about 165 hectares of forest (about 230 football pitches): 4% of the forest it had in 2000. Most of it (77%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 165 haabout 230 football pitches
- Share of its forest
- 4%of what there was in 2000
- Cleared for good
- 128 hadeforestation: turned into farms, mines or towns
The worst year was 2024, when about 19 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 | 12 ha | 1 ha | 13 ha |
| 2002 | 5 ha | 1 ha | 6 ha |
| 2003 | 2 ha | 2 ha | 4 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 6 ha | 4 ha | 10 ha |
| 2006 | 4 ha | under 1 ha | 4 ha |
| 2007 | 3 ha | under 1 ha | 3 ha |
| 2008 | 2 ha | under 1 ha | 3 ha |
| 2009 | 2 ha | 1 ha | 3 ha |
| 2010 | 7 ha | under 1 ha | 8 ha |
| 2011 | under 1 ha | under 1 ha | 1 ha |
| 2012 | 13 ha | 2 ha | 16 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 9 ha | under 1 ha | 10 ha |
| 2015 | 5 ha | under 1 ha | 5 ha |
| 2016 | 5 ha | 12 ha | 17 ha |
| 2017 | 5 ha | 2 ha | 7 ha |
| 2018 | 8 ha | under 1 ha | 8 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 1 ha | 1 ha | 2 ha |
| 2021 | 7 ha | under 1 ha | 8 ha |
| 2022 | 8 ha | under 1 ha | 8 ha |
| 2023 | 3 ha | under 1 ha | 3 ha |
| 2024 | 15 ha | 4 ha | 19 ha |
| 2025 | under 1 ha | 1 ha | 1 ha |
What is causing deforestation around Formosa?
- Farms, pasture and plantationscleared for good75% · 124 ha
- Wildfirescan grow back7.8% · 13 ha
- Loggingcan grow back6.6% · 11 ha
Also: towns and roads, 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
- 5,130 ha
- Forest in 2020
- 5,440 ha
- Overall change
- +312 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Formosa grew from about 5,130 hectares to 5,440 hectares, a net gain of about 312 hectares (+6.1%). New forest grew on about 398 hectares, while 86 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 Formosa
Same 2 km radius, same index — so they compare directly.
- Planaltina, Goias31.4 km
Brazil
- Tree cover
- 7%
- Air quality
- 31
- Planaltina34.8 km
Brazil
- Tree cover
- 17%
- Air quality
- 13
- Brasília69.2 km
Brazil
- Tree cover
- 27%
- Air quality
- 10
- Águas Claras81.4 km
Brazil
- Tree cover
- 16%
- Air quality
- 24
- Ceilândia90.5 km
Brazil
- Tree cover
- 9%
- Air quality
- 17
- Valparaíso de Goiás90.6 km
Brazil
- Tree cover
- 16%
- Air quality
- 24
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Frequently asked
Questions about Formosa
What is the air quality (AQI) in Formosa right now?
The latest reading for Formosa shows an AQI of 11 (Good), observed Nov 11, 06:00 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 Formosa 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 Formosa been like this week?
Over the last 7 days, the CAMS air-quality model put Formosa's daily AQI at 27 on average, from 11 on Nov 10 to an hourly peak of 75 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Formosa lost since 2001?
Since 2001, the area within 10 km of Formosa has lost about 165 hectares of forest (about 230 football pitches): 4% of the forest it had in 2000. Most of it (77%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Formosa grew from about 5,130 hectares to 5,440 hectares, a net gain of about 312 hectares (+6.1%). New forest grew on about 398 hectares, while 86 hectares were lost.
What is the tree count in Formosa?
Formosa has an estimated 45,239 trees across the 12.57 km² measured — 14.4% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Formosa need?
Formosa needs roughly 49,009 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,078 t of extra CO₂ absorbed per year once grown.
How are Formosa'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 St. Centro Nordeste; the tree count is an estimate derived from that cover.
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