City report · Rio de Janeiro, Brazil
Duque de Caxias Air quality today
Air quality in Duque de Caxias currently reads AQI 97 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 97
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 1.9
- tree cover
- 17.1%
- trees in this area
- 53.6K
- more trees needed
- 40.4K
Measured across a 2 km radius around Vila Meriti, Duque de Caxias - RJ, Brazil (12.57 km²), from a satellite image of Oct 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Duque de Caxias · AQI 97 (Moderate)
Duque de Caxias's tree count comes to 53,614 trees across 12.54 km² of land, 13 points below the 30% tree-cover level considered healthy for this area, so roughly 40,445 more trees would close the gap.
Air quality detail
Air quality in Duque de Caxias today: AQI 97, Moderate
Main pollutant: Ozone · Observed Nov 11, 14:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Pavuna, 6.1 km away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
1.9
PM10
7.6
NO₂
75.2
O₃
137.2
SO₂
—
CO
297.9
Data: OpenAQ · Rio City Hall, Prefeitura da Cidade do Rio de Janeiro · MonitorAr-Rio
- 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 Duque de Caxias's daily AQI at 76 on average, from 59 on Nov 7 to an hourly peak of 167 on Nov 4.
Where Duque de Caxias stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Duque de Caxias: Critically low
17.1% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
53,614
Target trees
94,059
More trees needed
40,445
CO₂ if planted / yr
889.8 t
Deforestation · 2001–2025
How much forest has Duque de Caxias lost?
Since 2001, the area within 10 km of Duque de Caxias has lost about 206 hectares of forest (about 290 football pitches): 8.8% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from May 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 206 haabout 290 football pitches
- Share of its forest
- 8.8%of what there was in 2000
- Cleared for good
- 185 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 34 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 | 2 ha | under 1 ha | 2 ha |
| 2002 | 3 ha | under 1 ha | 3 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 3 ha | under 1 ha | 3 ha |
| 2005 | 1 ha | under 1 ha | 1 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 2 ha | under 1 ha | 3 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 2 ha | under 1 ha | 2 ha |
| 2010 | 5 ha | under 1 ha | 5 ha |
| 2011 | 3 ha | under 1 ha | 3 ha |
| 2012 | 11 ha | under 1 ha | 11 ha |
| 2013 | 12 ha | 3 ha | 15 ha |
| 2014 | 27 ha | 7 ha | 34 ha |
| 2015 | 17 ha | 3 ha | 20 ha |
| 2016 | 17 ha | under 1 ha | 17 ha |
| 2017 | 15 ha | 4 ha | 19 ha |
| 2018 | 7 ha | under 1 ha | 7 ha |
| 2019 | 7 ha | under 1 ha | 7 ha |
| 2020 | 15 ha | under 1 ha | 15 ha |
| 2021 | 7 ha | under 1 ha | 7 ha |
| 2022 | 5 ha | under 1 ha | 5 ha |
| 2023 | 4 ha | under 1 ha | 4 ha |
| 2024 | 3 ha | under 1 ha | 3 ha |
| 2025 | 11 ha | under 1 ha | 12 ha |
What is causing deforestation around Duque de Caxias?
- Towns and roadscleared for good87% · 179 ha
- Loggingcan grow back5% · 10 ha
- Farms, pasture and plantationscleared for good2.7% · 6 ha
Also: storms, floods and other natural causes, 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
- 2,160 ha
- Forest in 2020
- 2,420 ha
- Overall change
- +257 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Duque de Caxias grew from about 2,160 hectares to 2,420 hectares, a net gain of about 257 hectares (+12%). New forest grew on about 301 hectares, while 44 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 Duque de Caxias
Same 2 km radius, same index — so they compare directly.
- Nova Iguaçu14.6 km
Brazil
- Tree cover
- 33%
- Air quality
- 77
- Rio de Janeiro18.9 km
Brazil
- Tree cover
- 21%
- Air quality
- 31
- Niterói23.9 km
Brazil
- Tree cover
- 33%
- Air quality
- 20
- Barra da Tijuca24.3 km
Brazil
- Tree cover
- 41%
- Air quality
- 14
- Queimados26.1 km
Brazil
- Tree cover
- 36%
- Air quality
- 45
- São Gonçalo26.8 km
Brazil
- Tree cover
- 30%
- Air quality
- 31
Build your own
Compare Duque de Caxias with anywhere
This place
Duque de Caxias
Use this data
Put Duque de Caxias's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Duque de Caxias
What is the air quality (AQI) in Duque de Caxias right now?
The latest reading for Duque de Caxias shows an AQI of 97 (Moderate), measured Nov 11, 14:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Pavuna, 6.1 km away). The main pollutant is Ozone. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Duque de Caxias today?
At AQI 97 (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 Duque de Caxias been like this week?
Over the last 7 days, the CAMS air-quality model put Duque de Caxias's daily AQI at 76 on average, from 59 on Nov 7 to an hourly peak of 167 on Nov 4. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Duque de Caxias lost since 2001?
Since 2001, the area within 10 km of Duque de Caxias has lost about 206 hectares of forest (about 290 football pitches): 8.8% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Duque de Caxias grew from about 2,160 hectares to 2,420 hectares, a net gain of about 257 hectares (+12%). New forest grew on about 301 hectares, while 44 hectares were lost.
What is the tree count in Duque de Caxias?
Duque de Caxias has an estimated 53,614 trees across the 12.54 km² of land measured — 17.1% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Duque de Caxias need?
Duque de Caxias needs roughly 40,445 more trees to close a 13-point shortfall against its 30% tree-cover target — about 889.8 t of extra CO₂ absorbed per year once grown.
How are Duque de Caxias's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Vila Meriti, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 Vila Meriti; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address