City report · Guanajuato, Mexico
Salamanca Air quality today
Air quality in Salamanca currently reads AQI 109 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 109
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 43.5
- tree cover
- 10.8%
- trees in this area
- 33.9K
- more trees needed
- 76.0K
Measured across a 2 km radius around Centro, Salamanca, Gto., Mexico (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Salamanca · AQI 109 (Unhealthy for sensitive groups)
Salamanca's tree count comes to 33,929 trees across 12.57 km², 24 points below the 35% tree-cover level considered healthy for this area, so roughly 76,027 more trees would close the gap.
Air quality detail
Air quality in Salamanca today: AQI 109, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 10, 21:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 8 station cities within 245 km, e.g. Santiago de Querétaro and Aguascalientes
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
43.5
PM10
30.2
NO₂
50.2
O₃
50.0
SO₂
12.6
CO
298.0
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Salamanca's daily AQI at 71 on average, from 58 on Nov 4 to an hourly peak of 105 on Nov 5.
Where Salamanca stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Salamanca: Critically low
10.8% tree cover against a 35% healthy-neighborhood target, across 12.57 km².
Trees in this area
33,929
Target trees
109,956
More trees needed
76,027
CO₂ if planted / yr
1,673 t
Deforestation · 2001–2025
How much forest has Salamanca lost?
Since 2001, the area within 10 km of Salamanca has lost about 3 hectares of forest (about 4 football pitches): under 1% of the forest it had in 2000. Most of it (72%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from April 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 3 haabout 4 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 2 hadeforestation: turned into farms, mines or towns
The worst year was 2002, when about 2 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 | 1 ha | under 1 ha | 2 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 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 | 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 Salamanca?
- Farms, pasture and plantationscleared for good64% · 2 ha
- Towns and roadscleared for good8% · under 1 ha
- Unknown causescause unknown28% · under 1 ha
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
- 1,280 ha
- Forest in 2020
- 1,320 ha
- Overall change
- +35 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Salamanca grew from about 1,280 hectares to 1,320 hectares, a net gain of about 35 hectares (+2.7%). New forest grew on about 44 hectares, while 9 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 Salamanca
Same 2 km radius, same index — so they compare directly.
- Irapuato19.9 km
Mexico
- Tree cover
- 5%
- Air quality
- 91
- Celaya40.3 km
Mexico
- Tree cover
- 7%
- Air quality
- 74
- San Miguel de Allende60.9 km
Mexico
- Tree cover
- 18%
- Air quality
- 62
- León de los Aldama79.4 km
Mexico
- Tree cover
- 4%
- Air quality
- 77
- Santiago de Querétaro84.3 km
Mexico
- Tree cover
- 9%
- Air quality
- 69
- Morelia96.6 km
Mexico
- Tree cover
- 10%
- Air quality
- 78
Build your own
Compare Salamanca with anywhere
This place
Salamanca
Use this data
Put Salamanca's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Salamanca
What is the air quality (AQI) in Salamanca right now?
The latest reading for Salamanca shows an AQI of 109 (Unhealthy for sensitive groups), observed Nov 10, 21:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Salamanca today?
At AQI 109 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Salamanca been like this week?
Over the last 7 days, the CAMS air-quality model put Salamanca's daily AQI at 71 on average, from 58 on Nov 4 to an hourly peak of 105 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 Salamanca lost since 2001?
Since 2001, the area within 10 km of Salamanca has lost about 3 hectares of forest (about 4 football pitches): under 1% of the forest it had in 2000. Most of it (72%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Salamanca grew from about 1,280 hectares to 1,320 hectares, a net gain of about 35 hectares (+2.7%). New forest grew on about 44 hectares, while 9 hectares were lost.
What is the tree count in Salamanca?
Salamanca has an estimated 33,929 trees across the 12.57 km² measured — 10.8% tree cover, 24 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Salamanca need?
Salamanca needs roughly 76,027 more trees to close a 24-point shortfall against its 35% tree-cover target — about 1,673 t of extra CO₂ absorbed per year once grown.
How are Salamanca'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 Centro; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address