City report · Querétaro, Mexico
San Juan del Río Air quality today
Air quality in San Juan del Río currently reads AQI 48 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 48
Good
- PM2.5, fine particles (µg/m³)
- 7.1
- tree cover
- 15.1%
- trees in this area
- 47.4K
- more trees needed
- 46.8K
Measured across a 2 km radius around Blvd. Hidalgo NO. 51 LOC 1, Centro, San Juan del Río, Qro., Mexico (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
San Juan del Río · AQI 48 (Good)
San Juan del Río's tree count comes to 47,438 trees across 12.57 km², 15 points below the 30% tree-cover level considered healthy for this area, so roughly 46,810 more trees would close the gap.
Air quality detail
Air quality in San Juan del Río today: AQI 48, Good
Main pollutant: PM2.5 · Observed Nov 10, 08:00 local time via Open-Meteo / CAMS, corrected with 10 ground-station cities within 145 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 10 station cities within 145 km, e.g. Santiago de Querétaro and Ciudad Nicolás Romero
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.1
PM10
11.4
NO₂
8.3
O₃
46.0
SO₂
9.6
CO
168.0
- 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 Juan del Río's daily AQI at 57 on average, from 46 on Nov 4 to an hourly peak of 88 on Nov 5.
Where San Juan del Río stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in San Juan del Río: Critically low
15.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
47,438
Target trees
94,248
More trees needed
46,810
CO₂ if planted / yr
1,030 t
Deforestation · 2001–2025
How much forest has San Juan del Río lost?
Since 2001, the area within 10 km of San Juan del Río has lost about 20 hectares of forest (about 28 football pitches): 1.3% of the forest it had in 2000. Most of it (56%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 20 haabout 28 football pitches
- Share of its forest
- 1.3%of what there was in 2000
- Cleared for good
- 11 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 9 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 | 6 ha | 3 ha | 9 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | 3 ha | 3 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 1 ha | under 1 ha | 2 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 San Juan del Río?
- Farms, pasture and plantationscleared for good57% · 11 ha
- Storms, floods and other natural causescan grow back19% · 4 ha
- Unknown causescause unknown24% · 5 ha
Also: towns and roads.
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
- 1,420 ha
- Forest in 2020
- 1,370 ha
- Overall change
- −47 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around San Juan del Río shrank from about 1,420 hectares to 1,370 hectares, a net loss of about 47 hectares (−3.3%). New forest grew on about 22 hectares, but 69 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 Juan del Río
Same 2 km radius, same index — so they compare directly.
- Santiago de Querétaro46.4 km
Mexico
- Tree cover
- 9%
- Air quality
- 65
- Celaya86.5 km
Mexico
- Tree cover
- 7%
- Air quality
- 51
- San Miguel de Allende97.3 km
Mexico
- Tree cover
- 18%
- Air quality
- 46
- Nicolás Romero110.0 km
Mexico
- Tree cover
- 17%
- Air quality
- 81
- Zumpango114.5 km
Mexico
- Tree cover
- 9%
- Air quality
- 37
- Cuautitlán Izcalli116.2 km
Mexico
- Tree cover
- 11%
- Air quality
- 91
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Frequently asked
Questions about San Juan del Río
What is the air quality (AQI) in San Juan del Río right now?
The latest reading for San Juan del Río shows an AQI of 48 (Good), observed Nov 10, 08:00 local time via Open-Meteo / CAMS, corrected with 10 ground-station cities within 145 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in San Juan del Río today?
At AQI 48 (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 Juan del Río been like this week?
Over the last 7 days, the CAMS air-quality model put San Juan del Río's daily AQI at 57 on average, from 46 on Nov 4 to an hourly peak of 88 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 Juan del Río lost since 2001?
Since 2001, the area within 10 km of San Juan del Río has lost about 20 hectares of forest (about 28 football pitches): 1.3% of the forest it had in 2000. Most of it (56%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around San Juan del Río shrank from about 1,420 hectares to 1,370 hectares, a net loss of about 47 hectares (−3.3%). New forest grew on about 22 hectares, but 69 hectares were lost.
What is the tree count in San Juan del Río?
San Juan del Río has an estimated 47,438 trees across the 12.57 km² measured — 15.1% tree cover, 15 percentage points short of the 30% tree-cover target set for this area.
How many more trees does San Juan del Río need?
San Juan del Río needs roughly 46,810 more trees to close a 15-point shortfall against its 30% tree-cover target — about 1,030 t of extra CO₂ absorbed per year once grown.
How are San Juan del Río'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 Blvd. Hidalgo NO. 51 LOC 1; the tree count is an estimate derived from that cover.
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