City report · Centre-Val de Loire, France
Tours Air quality today
Air quality in Tours currently reads AQI 46 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 46
Good
- PM2.5, fine particles (µg/m³)
- 8.2
- tree cover
- 29.3%
- trees in this area
- 89.2K
- more trees needed
- 2.1K
Measured across a 2 km radius around Quartier Blanqui-Mirabeau, 37000 Tours, France (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tours · AQI 46 (Good)
Tours's tree count comes to 89,195 trees across 12.18 km² of land, 1 points below the 30% tree-cover level considered healthy for this area, so roughly 2,131 more trees would close the gap.
Air quality detail
Air quality in Tours today: AQI 46, Good
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · La Bruyère, 3.1 km away · median of 4 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.2
PM10
12.6
NO₂
6.8
O₃
37.1
SO₂
—
CO
—
Data: OpenAQ · EEA
- 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 Tours's daily AQI at 55 on average, from 34 on Nov 10 to an hourly peak of 81 on Nov 6.
Where Tours stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tours: Below target
29.3% tree cover against a 30% healthy-neighborhood target, across 12.18 km² of land.
Trees in this area
89,195
Target trees
91,326
More trees needed
2,131
CO₂ if planted / yr
46.9 t
Deforestation · 2001–2025
How much forest has Tours lost?
Since 2001, the area within 10 km of Tours has lost about 237 hectares of forest (about 330 football pitches): 4.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 72 hectares (30%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 237 haabout 330 football pitches
- Share of its forest
- 4.6%of what there was in 2000
- Cleared for good
- 72 hadeforestation: turned into farms, mines or towns
The worst year was 2021, when about 23 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 | 3 ha | 4 ha | 7 ha |
| 2002 | 1 ha | under 1 ha | 2 ha |
| 2003 | 2 ha | 14 ha | 16 ha |
| 2004 | under 1 ha | 8 ha | 9 ha |
| 2005 | 12 ha | 6 ha | 19 ha |
| 2006 | 8 ha | 8 ha | 16 ha |
| 2007 | 5 ha | 8 ha | 13 ha |
| 2008 | 13 ha | 9 ha | 23 ha |
| 2009 | under 1 ha | 2 ha | 2 ha |
| 2010 | 2 ha | 8 ha | 10 ha |
| 2011 | 3 ha | under 1 ha | 4 ha |
| 2012 | 6 ha | 3 ha | 9 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | 1 ha |
| 2015 | under 1 ha | 8 ha | 8 ha |
| 2016 | under 1 ha | 2 ha | 2 ha |
| 2017 | 1 ha | 16 ha | 17 ha |
| 2018 | 1 ha | 7 ha | 8 ha |
| 2019 | 3 ha | 13 ha | 15 ha |
| 2020 | 2 ha | 5 ha | 6 ha |
| 2021 | under 1 ha | 23 ha | 23 ha |
| 2022 | 1 ha | 8 ha | 9 ha |
| 2023 | under 1 ha | 5 ha | 6 ha |
| 2024 | 2 ha | 4 ha | 6 ha |
| 2025 | 4 ha | 3 ha | 6 ha |
What is causing deforestation around Tours?
- Loggingcan grow back65% · 154 ha
- Towns and roadscleared for good29% · 69 ha
- Unknown causescause unknown5.1% · 12 ha
Also: farms, pasture and plantations.
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
- 7,000 ha
- Forest in 2020
- 7,330 ha
- Overall change
- +326 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tours grew from about 7,000 hectares to 7,330 hectares, a net gain of about 326 hectares (+4.7%). New forest grew on about 535 hectares, while 209 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
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Frequently asked
Questions about Tours
What is the air quality (AQI) in Tours right now?
The latest reading for Tours shows an AQI of 46 (Good), measured Nov 11, 15:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is La Bruyère, 3.1 km away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Tours today?
At AQI 46 (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 Tours been like this week?
Over the last 7 days, the CAMS air-quality model put Tours's daily AQI at 55 on average, from 34 on Nov 10 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 Tours lost since 2001?
Since 2001, the area within 10 km of Tours has lost about 237 hectares of forest (about 330 football pitches): 4.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 72 hectares (30%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Tours grew from about 7,000 hectares to 7,330 hectares, a net gain of about 326 hectares (+4.7%). New forest grew on about 535 hectares, while 209 hectares were lost.
What is the tree count in Tours?
Tours has an estimated 89,195 trees across the 12.18 km² of land measured — 29.3% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tours need?
Tours needs roughly 2,131 more trees to close a 1-point shortfall against its 30% tree-cover target — about 46.9 t of extra CO₂ absorbed per year once grown.
How are Tours's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Quartier Blanqui-Mirabeau, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 Quartier Blanqui-Mirabeau; the tree count is an estimate derived from that cover.
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