City report · Maranhão, Brazil
Açailândia Air quality today
Air quality in Açailândia currently reads AQI 58 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 58
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.2
- tree cover
- 22.0%
- trees in this area
- 69.1K
- more trees needed
- 25.1K
Measured across a 2 km radius around Açailândia, Maranhão, 65930-000, Brazil (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Açailândia · AQI 58 (Moderate)
Açailândia's tree count comes to 69,115 trees across 12.57 km², 8 points below the 30% tree-cover level considered healthy for this area, so roughly 25,133 more trees would close the gap.
Air quality detail
Air quality in Açailândia today: AQI 58, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 07:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.2
PM10
13.9
NO₂
3.3
O₃
57.0
SO₂
0.6
CO
218.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Açailândia's daily AQI at 60 on average, from 55 on Nov 10 to an hourly peak of 81 on Nov 4.
Where Açailândia stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Açailândia: Below target
22.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
69,115
Target trees
94,248
More trees needed
25,133
CO₂ if planted / yr
552.9 t
Deforestation · 2001–2025
How much forest has Açailândia lost?
Since 2001, the area within 10 km of Açailândia has lost about 4,960 hectares of forest (about 7,000 football pitches): 46% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from September 2017 of a 5 × 5 km area about 6 km northeast of the city center.
- Forest lost since 2001
- 4,960 haabout 7,000 football pitches
- Share of its forest
- 46%of what there was in 2000
- Cleared for good
- 3,980 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 212 hectares a year in 2021–2025, down from 348 hectares a year in 2016–2020. The worst year was 2016, when about 662 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 | 38 ha | under 1 ha | 39 ha |
| 2002 | 182 ha | 36 ha | 218 ha |
| 2003 | 67 ha | 2 ha | 69 ha |
| 2004 | 30 ha | under 1 ha | 30 ha |
| 2005 | 113 ha | 3 ha | 116 ha |
| 2006 | 63 ha | 21 ha | 84 ha |
| 2007 | 105 ha | 173 ha | 278 ha |
| 2008 | 60 ha | 63 ha | 123 ha |
| 2009 | 63 ha | 3 ha | 67 ha |
| 2010 | 104 ha | 151 ha | 255 ha |
| 2011 | 138 ha | 10 ha | 148 ha |
| 2012 | 168 ha | 8 ha | 176 ha |
| 2013 | 158 ha | 4 ha | 162 ha |
| 2014 | 160 ha | 8 ha | 168 ha |
| 2015 | 226 ha | 7 ha | 233 ha |
| 2016 | 390 ha | 272 ha | 662 ha |
| 2017 | 320 ha | 18 ha | 338 ha |
| 2018 | 103 ha | 6 ha | 109 ha |
| 2019 | 290 ha | 18 ha | 308 ha |
| 2020 | 289 ha | 34 ha | 323 ha |
| 2021 | 178 ha | 11 ha | 189 ha |
| 2022 | 149 ha | 37 ha | 186 ha |
| 2023 | 241 ha | 52 ha | 293 ha |
| 2024 | 198 ha | 23 ha | 221 ha |
| 2025 | 144 ha | 26 ha | 170 ha |
What is causing deforestation around Açailândia?
- Farms, pasture and plantationscleared for good77% · 3,830 ha
- Loggingcan grow back20% · 968 ha
- Towns and roadscleared for good2.1% · 104 ha
Also: mining and energy, wildfires, 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
- 4,960 ha
- Forest in 2020
- 4,790 ha
- Overall change
- −171 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Açailândia shrank from about 4,960 hectares to 4,790 hectares, a net loss of about 171 hectares (−3.4%). New forest grew on about 705 hectares, but 876 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 Açailândia
Same 2 km radius, same index — so they compare directly.
- Imperatriz64.5 km
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- Air quality
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- Marabá186.6 km
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- Air quality
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- Paragominas217.6 km
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- Air quality
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- Araguaína261.4 km
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- Air quality
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- Tucuruí274.5 km
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- Air quality
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- Parauapebas293.2 km
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- Tree cover
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- Air quality
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Frequently asked
Questions about Açailândia
What is the air quality (AQI) in Açailândia right now?
The latest reading for Açailândia shows an AQI of 58 (Moderate), observed Nov 10, 07:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Açailândia today?
At AQI 58 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Açailândia been like this week?
Over the last 7 days, the CAMS air-quality model put Açailândia's daily AQI at 60 on average, from 55 on Nov 10 to an hourly peak of 81 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Açailândia lost since 2001?
Since 2001, the area within 10 km of Açailândia has lost about 4,960 hectares of forest (about 7,000 football pitches): 46% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 212 hectares a year in 2021–2025, down from 348 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Açailândia shrank from about 4,960 hectares to 4,790 hectares, a net loss of about 171 hectares (−3.4%). New forest grew on about 705 hectares, but 876 hectares were lost.
What is the tree count in Açailândia?
Açailândia has an estimated 69,115 trees across the 12.57 km² measured — 22.0% tree cover, 8 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Açailândia need?
Açailândia needs roughly 25,133 more trees to close a 8-point shortfall against its 30% tree-cover target — about 552.9 t of extra CO₂ absorbed per year once grown.
How are Açailândia'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 Açailândia; the tree count is an estimate derived from that cover.
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