City report · Buenos Aires, Argentina
Castelar Air quality today
Air quality in Castelar currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 14
Good
- PM2.5, fine particles (µg/m³)
- 2.5
- tree cover
- 20.6%
- trees in this area
- 64.7K
- more trees needed
- 29.5K
Measured across a 2 km radius around B1712 Castelar, Buenos Aires Province, Argentina (12.57 km²), from a satellite image of Feb 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Castelar · AQI 14 (Good)
Castelar's tree count comes to 64,717 trees across 12.57 km², 9 points below the 30% tree-cover level considered healthy for this area, so roughly 29,531 more trees would close the gap.
Air quality detail
Air quality in Castelar today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 11, 12:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Avenida Raul Scalabrini Ortiz 1355, Palermo, Buenos Aires, Argentina, 20.6 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.5
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Luca
- 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 Castelar's daily AQI at 39 on average, from 24 on Nov 7 to an hourly peak of 70 on Nov 8.
Where Castelar stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Castelar: Below target
20.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
64,717
Target trees
94,248
More trees needed
29,531
CO₂ if planted / yr
649.7 t
Deforestation · 2001–2025
How much forest has Castelar lost?
Since 2001, the area within 10 km of Castelar has lost about 87 hectares of forest (about 120 football pitches): 6% of the forest it had in 2000. Most of it (82%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 87 haabout 120 football pitches
- Share of its forest
- 6%of what there was in 2000
- Cleared for good
- 72 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 24 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 2 ha | under 1 ha | 2 ha |
| 2008 | 7 ha | under 1 ha | 8 ha |
| 2009 | 1 ha | under 1 ha | 2 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 5 ha | under 1 ha | 6 ha |
| 2012 | under 1 ha | under 1 ha | 1 ha |
| 2013 | 2 ha | under 1 ha | 3 ha |
| 2014 | 3 ha | 1 ha | 5 ha |
| 2015 | 2 ha | under 1 ha | 3 ha |
| 2016 | 3 ha | under 1 ha | 3 ha |
| 2017 | 23 ha | 1 ha | 24 ha |
| 2018 | 9 ha | under 1 ha | 10 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | 1 ha |
| 2023 | under 1 ha | under 1 ha | 1 ha |
| 2024 | 5 ha | 1 ha | 7 ha |
| 2025 | 1 ha | 5 ha | 6 ha |
What is causing deforestation around Castelar?
- Towns and roadscleared for good44% · 38 ha
- Farms, pasture and plantationscleared for good38% · 34 ha
- Loggingcan grow back2.9% · 3 ha
Also: 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
- 663 ha
- Forest in 2020
- 736 ha
- Overall change
- +73 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Castelar grew from about 663 hectares to 736 hectares, a net gain of about 73 hectares (+11%). New forest grew on about 111 hectares, while 38 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 Castelar
Same 2 km radius, same index — so they compare directly.
- Laferrere12.2 km
Argentina
- Tree cover
- 16%
- Air quality
- 14
- José C. Paz19.1 km
Argentina
- Tree cover
- 21%
- Air quality
- 8
- Lanús23.6 km
Argentina
- Tree cover
- 10%
- Air quality
- 14
- Buenos Aires24.5 km
Argentina
- Tree cover
- 13%
- Air quality
- 14
- Ezeiza24.9 km
Argentina
- Tree cover
- 26%
- Air quality
- 11
- Quilmes36.1 km
Argentina
- Tree cover
- 21%
- Air quality
- 14
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Frequently asked
Questions about Castelar
What is the air quality (AQI) in Castelar right now?
The latest reading for Castelar shows an AQI of 14 (Good), measured Nov 11, 12:00 local time by the Avenida Raul Scalabrini Ortiz 1355, Palermo, Buenos Aires, Argentina ground monitoring station, 20.6 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Castelar today?
At AQI 14 (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 Castelar been like this week?
Over the last 7 days, the CAMS air-quality model put Castelar's daily AQI at 39 on average, from 24 on Nov 7 to an hourly peak of 70 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Castelar lost since 2001?
Since 2001, the area within 10 km of Castelar has lost about 87 hectares of forest (about 120 football pitches): 6% of the forest it had in 2000. Most of it (82%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Castelar grew from about 663 hectares to 736 hectares, a net gain of about 73 hectares (+11%). New forest grew on about 111 hectares, while 38 hectares were lost.
What is the tree count in Castelar?
Castelar has an estimated 64,717 trees across the 12.57 km² measured — 20.6% tree cover, 9 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Castelar need?
Castelar needs roughly 29,531 more trees to close a 9-point shortfall against its 30% tree-cover target — about 649.7 t of extra CO₂ absorbed per year once grown.
How are Castelar's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near B1712 Castelar, 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 B1712 Castelar; the tree count is an estimate derived from that cover.
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