City report · Argentina
San Luis Air quality today
Air quality in San Luis currently reads AQI 8 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 8
Good
- PM2.5, fine particles (µg/m³)
- 1.4
- tree cover
- 13.6%
- trees in this area
- 42.7K
- more trees needed
- 51.5K
Measured across a 2 km radius around San Luis, San Luis Province, Argentina (12.57 km²), from a satellite image of Feb 10, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
San Luis · AQI 8 (Good)
San Luis's tree count comes to 42,726 trees across 12.57 km², 16 points below the 30% tree-cover level considered healthy for this area, so roughly 51,522 more trees would close the gap.
Air quality detail
Air quality in San Luis today: AQI 8, Good
Main pollutant: PM2.5 · Observed Nov 10, 15:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.4
PM10
1.8
NO₂
0.9
O₃
80.0
SO₂
0.4
CO
114.0
- 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 San Luis's daily AQI at 12 on average, from 6 on Nov 10 to an hourly peak of 51 on Nov 4.
Where San Luis stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in San Luis: Critically low
13.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
42,726
Target trees
94,248
More trees needed
51,522
CO₂ if planted / yr
1,133 t
Deforestation · 2001–2025
How much forest has San Luis lost?
Since 2001, the area within 10 km of San Luis has lost about 197 hectares of forest (about 280 football pitches): 33% of the forest it had in 2000. Most of it (62%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 197 haabout 280 football pitches
- Share of its forest
- 33%of what there was in 2000
- Cleared for good
- 121 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 117 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 | 2 ha | under 1 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | 3 ha | under 1 ha | 3 ha |
| 2007 | 11 ha | under 1 ha | 11 ha |
| 2008 | 12 ha | 29 ha | 40 ha |
| 2009 | 7 ha | under 1 ha | 7 ha |
| 2010 | 72 ha | 45 ha | 117 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 3 ha | under 1 ha | 3 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 1 ha | under 1 ha | 2 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | 2 ha | under 1 ha | 2 ha |
| 2019 | 2 ha | under 1 ha | 2 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 | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around San Luis?
- Farms, pasture and plantationscleared for good51% · 100 ha
- Wildfirescan grow back37% · 74 ha
- Towns and roadscleared for good11% · 21 ha
Also: mining and energy, 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
- 670 ha
- Forest in 2020
- 636 ha
- Overall change
- −34 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around San Luis shrank from about 670 hectares to 636 hectares, a net loss of about 34 hectares (−5.1%). New forest grew on about 17 hectares, but 51 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 San Luis
Same 2 km radius, same index — so they compare directly.
- Río Cuarto184.3 km
Argentina
- Tree cover
- 10%
- Air quality
- 17
- San Rafael236.6 km
Argentina
- Tree cover
- 14%
- Air quality
- 12
- Mendoza239.1 km
Argentina
- Tree cover
- 30%
- Air quality
- 9
- Rawson281.8 km
Argentina
- Tree cover
- 6%
- Air quality
- 71
- Córdoba290.2 km
Argentina
- Tree cover
- 8%
- Air quality
- 29
- Peñalolén391.3 km
Chile
- Tree cover
- 18%
- Air quality
- 58
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Frequently asked
Questions about San Luis
What is the air quality (AQI) in San Luis right now?
The latest reading for San Luis shows an AQI of 8 (Good), observed Nov 10, 15:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in San Luis today?
At AQI 8 (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 San Luis been like this week?
Over the last 7 days, the CAMS air-quality model put San Luis's daily AQI at 12 on average, from 6 on Nov 10 to an hourly peak of 51 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around San Luis lost since 2001?
Since 2001, the area within 10 km of San Luis has lost about 197 hectares of forest (about 280 football pitches): 33% of the forest it had in 2000. Most of it (62%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around San Luis shrank from about 670 hectares to 636 hectares, a net loss of about 34 hectares (−5.1%). New forest grew on about 17 hectares, but 51 hectares were lost.
What is the tree count in San Luis?
San Luis has an estimated 42,726 trees across the 12.57 km² measured — 13.6% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does San Luis need?
San Luis needs roughly 51,522 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,133 t of extra CO₂ absorbed per year once grown.
How are San Luis'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 San Luis; the tree count is an estimate derived from that cover.
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