City report · El Salvador
Santa Ana Air quality today
Air quality in Santa Ana currently reads AQI 18 (Good): Air quality is satisfactory for everyone.
AQI 18
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 2.9
- tree cover
- 37.2%
- trees in this area
- 117K
- more trees needed
- 0
Measured across a 2 km radius around Barrio San Miguelito, Santa Ana, El Salvador (12.57 km²), from a satellite image of Sep 17, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Santa Ana · AQI 18 (Good)
Santa Ana's tree count comes to 116,867 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Santa Ana today: AQI 18, Good
Main pollutant: PM2.5 · Observed Nov 10, 14:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 250 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 250 km, e.g. Villa Nueva and Guatemala City
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.9
PM10
4.9
NO₂
0.4
O₃
74.0
SO₂
1.9
CO
119.0
- 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 Santa Ana's daily AQI at 51 on average, from 44 on Nov 9 to an hourly peak of 81 on Nov 6.
Where Santa Ana stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Santa Ana: Healthy tree cover
37.2% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
116,867
Target trees
116,867
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Santa Ana lost?
Since 2001, the area within 10 km of Santa Ana has lost about 3,020 hectares of forest (about 4,200 football pitches): 16% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area about 6 km west of the city center.
- Forest lost since 2001
- 3,020 haabout 4,200 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 3,020 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 174 hectares a year in 2021–2025, down from 301 hectares a year in 2016–2020. The worst year was 2016, when about 480 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 | 46 ha | under 1 ha | 46 ha |
| 2002 | 56 ha | under 1 ha | 56 ha |
| 2003 | 70 ha | 1 ha | 71 ha |
| 2004 | 15 ha | under 1 ha | 15 ha |
| 2005 | 46 ha | under 1 ha | 47 ha |
| 2006 | 23 ha | under 1 ha | 23 ha |
| 2007 | 35 ha | under 1 ha | 35 ha |
| 2008 | 59 ha | under 1 ha | 60 ha |
| 2009 | 78 ha | under 1 ha | 78 ha |
| 2010 | 29 ha | under 1 ha | 30 ha |
| 2011 | 34 ha | under 1 ha | 34 ha |
| 2012 | 33 ha | under 1 ha | 34 ha |
| 2013 | 30 ha | under 1 ha | 30 ha |
| 2014 | 42 ha | under 1 ha | 42 ha |
| 2015 | 50 ha | under 1 ha | 50 ha |
| 2016 | 480 ha | under 1 ha | 480 ha |
| 2017 | 325 ha | under 1 ha | 325 ha |
| 2018 | 162 ha | under 1 ha | 162 ha |
| 2019 | 251 ha | under 1 ha | 251 ha |
| 2020 | 284 ha | 1 ha | 285 ha |
| 2021 | 151 ha | under 1 ha | 151 ha |
| 2022 | 221 ha | under 1 ha | 221 ha |
| 2023 | 169 ha | under 1 ha | 169 ha |
| 2024 | 190 ha | under 1 ha | 190 ha |
| 2025 | 140 ha | 1 ha | 141 ha |
What is causing deforestation around Santa Ana?
- Farms, pasture and plantationscleared for good88% · 2,650 ha
- Towns and roadscleared for good12% · 365 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
- 24,800 ha
- Forest in 2020
- 23,800 ha
- Overall change
- −959 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Santa Ana shrank from about 24,800 hectares to 23,800 hectares, a net loss of about 959 hectares (−3.9%). New forest grew on about 80 hectares, but 1,040 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 Santa Ana
Same 2 km radius, same index — so they compare directly.
- Apopa45.5 km
El Salvador
- Tree cover
- 52%
- Air quality
- 29
- Santa Tecla45.5 km
El Salvador
- Tree cover
- 33%
- Air quality
- 21
- Jutiapa48.6 km
Guatemala
- Tree cover
- 31%
- Air quality
- 18
- Jalapa85.8 km
Guatemala
- Tree cover
- 17%
- Air quality
- 18
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Frequently asked
Questions about Santa Ana
What is the air quality (AQI) in Santa Ana right now?
The latest reading for Santa Ana shows an AQI of 18 (Good), observed Nov 10, 14:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 250 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Santa Ana today?
At AQI 18 (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 Santa Ana been like this week?
Over the last 7 days, the CAMS air-quality model put Santa Ana's daily AQI at 51 on average, from 44 on Nov 9 to an hourly peak of 81 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 Santa Ana lost since 2001?
Since 2001, the area within 10 km of Santa Ana has lost about 3,020 hectares of forest (about 4,200 football pitches): 16% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 174 hectares a year in 2021–2025, down from 301 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Santa Ana shrank from about 24,800 hectares to 23,800 hectares, a net loss of about 959 hectares (−3.9%). New forest grew on about 80 hectares, but 1,040 hectares were lost.
What is the tree count in Santa Ana?
Santa Ana has an estimated 116,867 trees across the 12.57 km² measured — 37.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Santa Ana need?
Santa Ana has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Santa Ana'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 Barrio San Miguelito; the tree count is an estimate derived from that cover.
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