City report · El Salvador
San Miguel Air quality today
Air quality in San Miguel currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 53
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.7
- tree cover
- 33.1%
- trees in this area
- 104K
- more trees needed
- 0
Measured across a 2 km radius around San Miguel, El Salvador (12.57 km²), from a satellite image of Aug 28, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
San Miguel · AQI 53 (Moderate)
San Miguel's tree count comes to 103,987 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 San Miguel today: AQI 53, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 14:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 245 km, e.g. Tegucigalpa and El Progreso
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.7
PM10
6.2
NO₂
1.0
O₃
107.0
SO₂
2.4
CO
126.0
- 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 San Miguel's daily AQI at 53 on average, from 44 on Nov 10 to an hourly peak of 84 on Nov 7.
Where San Miguel stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in San Miguel: Healthy tree cover
33.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
103,987
Target trees
103,987
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has San Miguel lost?
Since 2001, the area within 10 km of San Miguel has lost about 858 hectares of forest (about 1,200 football pitches): 9.8% of the forest it had in 2000. Most of it (97%) 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 7 km west of the city center.
- Forest lost since 2001
- 858 haabout 1,200 football pitches
- Share of its forest
- 9.8%of what there was in 2000
- Cleared for good
- 833 hadeforestation: turned into farms, mines or towns
The worst year was 2004, when about 121 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 | 7 ha | under 1 ha | 8 ha |
| 2002 | 61 ha | 2 ha | 63 ha |
| 2003 | 37 ha | under 1 ha | 37 ha |
| 2004 | 119 ha | 2 ha | 121 ha |
| 2005 | 41 ha | 2 ha | 43 ha |
| 2006 | 113 ha | 2 ha | 115 ha |
| 2007 | 30 ha | 1 ha | 31 ha |
| 2008 | 21 ha | under 1 ha | 21 ha |
| 2009 | 35 ha | under 1 ha | 35 ha |
| 2010 | 42 ha | under 1 ha | 43 ha |
| 2011 | 32 ha | 2 ha | 34 ha |
| 2012 | 44 ha | 5 ha | 49 ha |
| 2013 | 23 ha | under 1 ha | 24 ha |
| 2014 | 41 ha | under 1 ha | 42 ha |
| 2015 | 11 ha | under 1 ha | 12 ha |
| 2016 | 50 ha | 4 ha | 53 ha |
| 2017 | 43 ha | under 1 ha | 43 ha |
| 2018 | 8 ha | under 1 ha | 9 ha |
| 2019 | 17 ha | under 1 ha | 17 ha |
| 2020 | 10 ha | under 1 ha | 10 ha |
| 2021 | 6 ha | under 1 ha | 6 ha |
| 2022 | 10 ha | under 1 ha | 10 ha |
| 2023 | 13 ha | under 1 ha | 13 ha |
| 2024 | 8 ha | under 1 ha | 8 ha |
| 2025 | 10 ha | 1 ha | 11 ha |
What is causing deforestation around San Miguel?
- Farms, pasture and plantationscleared for good91% · 782 ha
- Towns and roadscleared for good6.1% · 52 ha
- Unknown causescause unknown2.2% · 19 ha
Also: wildfires, shifting farming, 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
- 13,500 ha
- Forest in 2020
- 13,400 ha
- Overall change
- −158 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around San Miguel stayed about the same size, at about 13,400 hectares: new forest grew on about 376 hectares, and about 535 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 Miguel
Same 2 km radius, same index — so they compare directly.
- Apopa113.6 km
El Salvador
- Tree cover
- 52%
- Air quality
- 29
- Santa Tecla121.0 km
El Salvador
- Tree cover
- 33%
- Air quality
- 21
- Tegucigalpa124.6 km
Honduras
- Tree cover
- 21%
- Air quality
- 9
- Siguatepeque129.6 km
Honduras
- Tree cover
- 24%
- Air quality
- 12
Also compared:San Miguel vs Santa AnaSan Miguel vs Sonsonate
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Frequently asked
Questions about San Miguel
What is the air quality (AQI) in San Miguel right now?
The latest reading for San Miguel shows an AQI of 53 (Moderate), observed Nov 10, 14:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in San Miguel today?
At AQI 53 (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 San Miguel been like this week?
Over the last 7 days, the CAMS air-quality model put San Miguel's daily AQI at 53 on average, from 44 on Nov 10 to an hourly peak of 84 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around San Miguel lost since 2001?
Since 2001, the area within 10 km of San Miguel has lost about 858 hectares of forest (about 1,200 football pitches): 9.8% of the forest it had in 2000. Most of it (97%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around San Miguel stayed about the same size, at about 13,400 hectares: new forest grew on about 376 hectares, and about 535 hectares were lost.
What is the tree count in San Miguel?
San Miguel has an estimated 103,987 trees across the 12.57 km² measured — 33.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does San Miguel need?
San Miguel has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are San Miguel'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 Miguel; the tree count is an estimate derived from that cover.
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