City report · Venezuela
San Cristóbal Air quality today
Air quality in San Cristóbal currently reads AQI 24 (Good): Air quality is satisfactory for everyone.
AQI 24
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 4.4
- tree cover
- 28.9%
- trees in this area
- 90.8K
- more trees needed
- 3.5K
Measured across a 2 km radius around San Martin, San Cristobal 5001, Táchira, Venezuela (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
San Cristóbal · AQI 24 (Good)
San Cristóbal's tree count comes to 90,792 trees across 12.57 km², 1 points below the 30% tree-cover level considered healthy for this area, so roughly 3,456 more trees would close the gap.
Air quality detail
Air quality in San Cristóbal today: AQI 24, Good
Main pollutant: PM2.5 · Observed Nov 11, 00:00 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
4.4
PM10
4.5
NO₂
4.7
O₃
39.0
SO₂
0.6
CO
248.0
- 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 Cristóbal's daily AQI at 27 on average, from 21 on Nov 8 to an hourly peak of 55 on Nov 5.
Where San Cristóbal stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in San Cristóbal: Below target
28.9% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
90,792
Target trees
94,248
More trees needed
3,456
CO₂ if planted / yr
76.0 t
Deforestation · 2001–2025
How much forest has San Cristóbal lost?
Since 2001, the area within 10 km of San Cristóbal has lost about 579 hectares of forest (about 810 football pitches): 3% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km southwest of the city center.
- Forest lost since 2001
- 579 haabout 810 football pitches
- Share of its forest
- 3%of what there was in 2000
- Cleared for good
- 567 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 72 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 | 14 ha | under 1 ha | 15 ha |
| 2002 | 19 ha | under 1 ha | 19 ha |
| 2003 | 16 ha | under 1 ha | 17 ha |
| 2004 | 24 ha | under 1 ha | 25 ha |
| 2005 | 31 ha | under 1 ha | 32 ha |
| 2006 | 7 ha | under 1 ha | 8 ha |
| 2007 | 55 ha | under 1 ha | 55 ha |
| 2008 | 22 ha | under 1 ha | 23 ha |
| 2009 | 62 ha | under 1 ha | 63 ha |
| 2010 | 56 ha | under 1 ha | 56 ha |
| 2011 | 24 ha | 1 ha | 25 ha |
| 2012 | 70 ha | 2 ha | 72 ha |
| 2013 | 3 ha | under 1 ha | 3 ha |
| 2014 | 7 ha | under 1 ha | 7 ha |
| 2015 | 4 ha | under 1 ha | 4 ha |
| 2016 | 18 ha | under 1 ha | 18 ha |
| 2017 | 19 ha | under 1 ha | 19 ha |
| 2018 | 8 ha | under 1 ha | 8 ha |
| 2019 | 23 ha | under 1 ha | 24 ha |
| 2020 | 13 ha | under 1 ha | 13 ha |
| 2021 | 8 ha | 1 ha | 9 ha |
| 2022 | 9 ha | 1 ha | 10 ha |
| 2023 | 10 ha | under 1 ha | 10 ha |
| 2024 | 36 ha | under 1 ha | 36 ha |
| 2025 | 9 ha | under 1 ha | 10 ha |
What is causing deforestation around San Cristóbal?
- Farms, pasture and plantationscleared for good64% · 369 ha
- Towns and roadscleared for good34% · 197 ha
- Unknown causescause unknown1.5% · 9 ha
Also: storms, floods and other natural 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
- 21,300 ha
- Forest in 2020
- 20,800 ha
- Overall change
- −551 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around San Cristóbal shrank from about 21,300 hectares to 20,800 hectares, a net loss of about 551 hectares (−2.6%). New forest grew on about 144 hectares, but 694 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 Cristóbal
Same 2 km radius, same index — so they compare directly.
- Cúcuta33.6 km
Colombia
- Tree cover
- 17%
- Air quality
- 52
- El Vigía113.8 km
Venezuela
- Tree cover
- 33%
- Air quality
- 43
- Bucaramanga120.7 km
Colombia
- Tree cover
- 21%
- Air quality
- 48
- Piedecuesta124.6 km
Colombia
- Tree cover
- 53%
- Air quality
- 58
- Girón128.9 km
Colombia
- Tree cover
- 44%
- Air quality
- 47
- Ocaña134.0 km
Colombia
- Tree cover
- 36%
- Air quality
- 52
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Frequently asked
Questions about San Cristóbal
What is the air quality (AQI) in San Cristóbal right now?
The latest reading for San Cristóbal shows an AQI of 24 (Good), observed Nov 11, 00:00 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 Cristóbal today?
At AQI 24 (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 Cristóbal been like this week?
Over the last 7 days, the CAMS air-quality model put San Cristóbal's daily AQI at 27 on average, from 21 on Nov 8 to an hourly peak of 55 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around San Cristóbal lost since 2001?
Since 2001, the area within 10 km of San Cristóbal has lost about 579 hectares of forest (about 810 football pitches): 3% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around San Cristóbal shrank from about 21,300 hectares to 20,800 hectares, a net loss of about 551 hectares (−2.6%). New forest grew on about 144 hectares, but 694 hectares were lost.
What is the tree count in San Cristóbal?
San Cristóbal has an estimated 90,792 trees across the 12.57 km² measured — 28.9% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does San Cristóbal need?
San Cristóbal needs roughly 3,456 more trees to close a 1-point shortfall against its 30% tree-cover target — about 76.0 t of extra CO₂ absorbed per year once grown.
How are San Cristóbal'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 Martin; the tree count is an estimate derived from that cover.
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