City report · Rio de Janeiro, Brazil
Japeri Air quality today
Air quality in Japeri currently reads AQI 25 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 25
Good
- PM2.5, fine particles (µg/m³)
- 4.8
- tree cover
- 54.8%
- trees in this area
- 170K
- more trees needed
- 0
Measured across a 2 km radius around Nossa Sra. de Fátima, Japeri - RJ, Brazil (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Japeri · AQI 25 (Good)
Japeri's tree count comes to 170,093 trees across 12.42 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Japeri today: AQI 25, Good
Main pollutant: PM2.5 · Observed Nov 11, 06:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 65 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 8 station cities within 65 km, e.g. Queimados and Nova Iguaçu
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.8
PM10
21.4
NO₂
25.7
O₃
19.0
SO₂
6.7
CO
94.0
- 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 Japeri's daily AQI at 67 on average, from 54 on Nov 8 to an hourly peak of 134 on Nov 6.
Where Japeri stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Japeri: Healthy tree cover
54.8% tree cover against a 30% healthy-neighborhood target, across 12.42 km² of land.
Trees in this area
170,093
Target trees
170,093
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Japeri lost?
Since 2001, the area within 10 km of Japeri has lost about 798 hectares of forest (about 1,100 football pitches): 5.2% of the forest it had in 2000. Most of it (92%) 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 north of the city center.
- Forest lost since 2001
- 798 haabout 1,100 football pitches
- Share of its forest
- 5.2%of what there was in 2000
- Cleared for good
- 736 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 129 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 | 25 ha | under 1 ha | 26 ha |
| 2002 | 15 ha | under 1 ha | 15 ha |
| 2003 | 13 ha | under 1 ha | 13 ha |
| 2004 | 12 ha | 11 ha | 23 ha |
| 2005 | 26 ha | under 1 ha | 26 ha |
| 2006 | 22 ha | under 1 ha | 22 ha |
| 2007 | 37 ha | under 1 ha | 38 ha |
| 2008 | 9 ha | under 1 ha | 10 ha |
| 2009 | 15 ha | under 1 ha | 15 ha |
| 2010 | 30 ha | under 1 ha | 31 ha |
| 2011 | 40 ha | 1 ha | 41 ha |
| 2012 | 15 ha | under 1 ha | 15 ha |
| 2013 | 95 ha | 1 ha | 96 ha |
| 2014 | 48 ha | 4 ha | 52 ha |
| 2015 | 25 ha | under 1 ha | 26 ha |
| 2016 | 35 ha | under 1 ha | 35 ha |
| 2017 | 114 ha | 15 ha | 129 ha |
| 2018 | 18 ha | under 1 ha | 18 ha |
| 2019 | 14 ha | under 1 ha | 14 ha |
| 2020 | 27 ha | 2 ha | 29 ha |
| 2021 | 16 ha | under 1 ha | 16 ha |
| 2022 | 17 ha | under 1 ha | 17 ha |
| 2023 | 7 ha | under 1 ha | 7 ha |
| 2024 | 25 ha | 17 ha | 42 ha |
| 2025 | 38 ha | 5 ha | 42 ha |
What is causing deforestation around Japeri?
- Farms, pasture and plantationscleared for good76% · 608 ha
- Towns and roadscleared for good13% · 101 ha
- Wildfirescan grow back4.7% · 37 ha
Also: mining and energy, logging, storms, floods and other natural causes, 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
- 13,200 ha
- Forest in 2020
- 13,500 ha
- Overall change
- +352 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Japeri grew from about 13,200 hectares to 13,500 hectares, a net gain of about 352 hectares (+2.7%). New forest grew on about 637 hectares, while 285 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 Japeri
Same 2 km radius, same index — so they compare directly.
- Queimados12.9 km
Brazil
- Tree cover
- 36%
- Air quality
- 45
- Nova Iguaçu24.4 km
Brazil
- Tree cover
- 33%
- Air quality
- 77
- Barra do Piraí26.1 km
Brazil
- Tree cover
- 41%
- Air quality
- 14
- Itaguaí26.4 km
Brazil
- Tree cover
- 34%
- Air quality
- 14
- Duque de Caxias38.5 km
Brazil
- Tree cover
- 17%
- Air quality
- 126
- Volta Redonda48.2 km
Brazil
- Tree cover
- 39%
- Air quality
- 9
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Frequently asked
Questions about Japeri
What is the air quality (AQI) in Japeri right now?
The latest reading for Japeri shows an AQI of 25 (Good), observed Nov 11, 06:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 65 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Japeri 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 Japeri been like this week?
Over the last 7 days, the CAMS air-quality model put Japeri's daily AQI at 67 on average, from 54 on Nov 8 to an hourly peak of 134 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 Japeri lost since 2001?
Since 2001, the area within 10 km of Japeri has lost about 798 hectares of forest (about 1,100 football pitches): 5.2% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Japeri grew from about 13,200 hectares to 13,500 hectares, a net gain of about 352 hectares (+2.7%). New forest grew on about 637 hectares, while 285 hectares were lost.
What is the tree count in Japeri?
Japeri has an estimated 170,093 trees across the 12.42 km² of land measured — 54.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Japeri need?
Japeri has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Japeri'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 Nossa Sra. de Fátima; the tree count is an estimate derived from that cover.
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