City report · Pará, Brazil
Altamira Air quality today
Air quality in Altamira currently reads AQI 57 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 57
Moderate
- PM2.5, fine particles (µg/m³)
- 12.2
- tree cover
- 23.5%
- trees in this area
- 57.1K
- more trees needed
- 15.8K
Measured across a 2 km radius around Catedral, Altamira - PA, Brazil (12.57 km²), from a satellite image of Oct 29, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Altamira · AQI 57 (Moderate)
Altamira's tree count comes to 57,069 trees across 9.72 km² of land, 7 points below the 30% tree-cover level considered healthy for this area, so roughly 15,785 more trees would close the gap.
Air quality detail
Air quality in Altamira today: AQI 57, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 12:00 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
12.2
PM10
13.4
NO₂
1.0
O₃
77.0
SO₂
0.7
CO
177.0
- 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 Altamira's daily AQI at 70 on average, from 60 on Nov 5 to an hourly peak of 122 on Nov 11.
Where Altamira stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Altamira: Below target
23.5% tree cover against a 30% healthy-neighborhood target, across 9.72 km² of land.
Trees in this area
57,069
Target trees
72,854
More trees needed
15,785
CO₂ if planted / yr
347.3 t
Deforestation · 2001–2025
How much forest has Altamira lost?
Since 2001, the area within 10 km of Altamira has lost about 5,070 hectares of forest (about 7,100 football pitches): 29% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 5,070 haabout 7,100 football pitches
- Share of its forest
- 29%of what there was in 2000
- Cleared for good
- 4,760 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 121 hectares a year in 2021–2025, down from 307 hectares a year in 2016–2020. The worst year was 2018, when about 505 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 | 279 ha | 5 ha | 284 ha |
| 2002 | 122 ha | 1 ha | 123 ha |
| 2003 | 47 ha | under 1 ha | 47 ha |
| 2004 | 261 ha | 2 ha | 263 ha |
| 2005 | 490 ha | 14 ha | 504 ha |
| 2006 | 94 ha | 9 ha | 103 ha |
| 2007 | 104 ha | 2 ha | 106 ha |
| 2008 | 65 ha | 1 ha | 67 ha |
| 2009 | 117 ha | 7 ha | 124 ha |
| 2010 | 146 ha | 16 ha | 162 ha |
| 2011 | 193 ha | 4 ha | 197 ha |
| 2012 | 240 ha | 5 ha | 245 ha |
| 2013 | 101 ha | 3 ha | 104 ha |
| 2014 | 269 ha | 2 ha | 271 ha |
| 2015 | 237 ha | 91 ha | 328 ha |
| 2016 | 407 ha | 45 ha | 452 ha |
| 2017 | 354 ha | 27 ha | 381 ha |
| 2018 | 470 ha | 35 ha | 505 ha |
| 2019 | 104 ha | 10 ha | 114 ha |
| 2020 | 76 ha | 7 ha | 83 ha |
| 2021 | 82 ha | 3 ha | 85 ha |
| 2022 | 139 ha | 3 ha | 142 ha |
| 2023 | 153 ha | under 1 ha | 153 ha |
| 2024 | 104 ha | 4 ha | 108 ha |
| 2025 | 102 ha | 15 ha | 117 ha |
What is causing deforestation around Altamira?
- Farms, pasture and plantationscleared for good83% · 4,200 ha
- Towns and roadscleared for good11% · 558 ha
- Storms, floods and other natural causescan grow back4.3% · 218 ha
Also: wildfires, shifting farming, logging, 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
- 10,800 ha
- Forest in 2020
- 9,960 ha
- Overall change
- −856 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Altamira shrank from about 10,800 hectares to 9,960 hectares, a net loss of about 856 hectares (−7.9%). New forest grew on about 1,030 hectares, but 1,880 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
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Frequently asked
Questions about Altamira
What is the air quality (AQI) in Altamira right now?
The latest reading for Altamira shows an AQI of 57 (Moderate), observed Nov 11, 12:00 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 Altamira today?
At AQI 57 (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 Altamira been like this week?
Over the last 7 days, the CAMS air-quality model put Altamira's daily AQI at 70 on average, from 60 on Nov 5 to an hourly peak of 122 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Altamira lost since 2001?
Since 2001, the area within 10 km of Altamira has lost about 5,070 hectares of forest (about 7,100 football pitches): 29% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 121 hectares a year in 2021–2025, down from 307 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Altamira shrank from about 10,800 hectares to 9,960 hectares, a net loss of about 856 hectares (−7.9%). New forest grew on about 1,030 hectares, but 1,880 hectares were lost.
What is the tree count in Altamira?
Altamira has an estimated 57,069 trees across the 9.72 km² of land measured — 23.5% tree cover, 7 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Altamira need?
Altamira needs roughly 15,785 more trees to close a 7-point shortfall against its 30% tree-cover target — about 347.3 t of extra CO₂ absorbed per year once grown.
How are Altamira'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 Catedral; the tree count is an estimate derived from that cover.
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