City report · Rio de Janeiro, Brazil
Magé Air quality today
Air quality in Magé currently reads AQI 25 (Good): Air quality is satisfactory for everyone.
AQI 25
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 4.5
- tree cover
- 62.4%
- trees in this area
- 196K
- more trees needed
- 0
Measured across a 2 km radius around Magé, Rio de Janeiro, Brazil (12.57 km²), from a satellite image of Oct 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Magé · AQI 25 (Good)
Magé's tree count comes to 196,035 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Magé today: AQI 25, Good
Main pollutant: PM2.5 · Observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 45 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 45 km, e.g. São Gonçalo and Niterói
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.5
PM10
21.4
NO₂
19.7
O₃
19.0
SO₂
4.2
CO
151.0
- 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 Magé's daily AQI at 70 on average, from 59 on Nov 7 to an hourly peak of 149 on Nov 6.
Where Magé stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Magé: Healthy tree cover
62.4% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
196,035
Target trees
196,035
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Magé lost?
Since 2001, the area within 10 km of Magé has lost about 927 hectares of forest (about 1,300 football pitches): 5.2% of the forest it had in 2000. Most of it (73%) 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 6 km northwest of the city center.
- Forest lost since 2001
- 927 haabout 1,300 football pitches
- Share of its forest
- 5.2%of what there was in 2000
- Cleared for good
- 680 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 75 hectares a year in 2021–2025, up from 46 hectares a year in 2016–2020. The worst year was 2024, when about 141 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 | 10 ha | under 1 ha | 10 ha |
| 2002 | 13 ha | under 1 ha | 14 ha |
| 2003 | 7 ha | under 1 ha | 8 ha |
| 2004 | 9 ha | under 1 ha | 9 ha |
| 2005 | 13 ha | under 1 ha | 13 ha |
| 2006 | 8 ha | under 1 ha | 8 ha |
| 2007 | 18 ha | under 1 ha | 18 ha |
| 2008 | 9 ha | under 1 ha | 10 ha |
| 2009 | 24 ha | 2 ha | 26 ha |
| 2010 | 7 ha | under 1 ha | 7 ha |
| 2011 | 12 ha | 2 ha | 14 ha |
| 2012 | 13 ha | under 1 ha | 13 ha |
| 2013 | 25 ha | 33 ha | 57 ha |
| 2014 | 58 ha | 10 ha | 68 ha |
| 2015 | 31 ha | 18 ha | 49 ha |
| 2016 | 35 ha | under 1 ha | 36 ha |
| 2017 | 91 ha | 10 ha | 100 ha |
| 2018 | 31 ha | 6 ha | 36 ha |
| 2019 | 23 ha | 4 ha | 28 ha |
| 2020 | 26 ha | 3 ha | 29 ha |
| 2021 | 16 ha | 7 ha | 23 ha |
| 2022 | 22 ha | 23 ha | 45 ha |
| 2023 | 21 ha | 30 ha | 51 ha |
| 2024 | 99 ha | 42 ha | 141 ha |
| 2025 | 62 ha | 54 ha | 116 ha |
What is causing deforestation around Magé?
- Farms, pasture and plantationscleared for good53% · 494 ha
- Storms, floods and other natural causescan grow back24% · 221 ha
- Towns and roadscleared for good18% · 163 ha
Also: mining and energy, logging, 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
- 13,400 ha
- Forest in 2020
- 13,700 ha
- Overall change
- +264 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Magé stayed about the same size, at about 13,700 hectares: new forest grew on about 603 hectares, and about 339 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 Magé
Same 2 km radius, same index — so they compare directly.
- São Gonçalo19.4 km
Brazil
- Tree cover
- 30%
- Air quality
- 31
- Itaboraí21.2 km
Brazil
- Tree cover
- 45%
- Air quality
- 12
- Petrópolis21.7 km
Brazil
- Tree cover
- 74%
- Air quality
- 14
- Niterói26.4 km
Brazil
- Tree cover
- 33%
- Air quality
- 20
- Teresópolis27.0 km
Brazil
- Tree cover
- 59%
- Air quality
- 7
- Duque de Caxias31.5 km
Brazil
- Tree cover
- 17%
- Air quality
- 126
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Frequently asked
Questions about Magé
What is the air quality (AQI) in Magé right now?
The latest reading for Magé shows an AQI of 25 (Good), observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 45 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Magé today?
At AQI 25 (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 Magé been like this week?
Over the last 7 days, the CAMS air-quality model put Magé's daily AQI at 70 on average, from 59 on Nov 7 to an hourly peak of 149 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 Magé lost since 2001?
Since 2001, the area within 10 km of Magé has lost about 927 hectares of forest (about 1,300 football pitches): 5.2% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is speeding up: about 75 hectares a year in 2021–2025, up from 46 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Magé stayed about the same size, at about 13,700 hectares: new forest grew on about 603 hectares, and about 339 hectares were lost.
What is the tree count in Magé?
Magé has an estimated 196,035 trees across the 12.57 km² measured — 62.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Magé need?
Magé has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Magé'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 Magé; the tree count is an estimate derived from that cover.
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