City report · England, United Kingdom
Sutton Air quality today
Air quality in Sutton currently reads AQI 71 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 71
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 20.0
- tree cover
- 44.5%
- trees in this area
- 140K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Sutton, UK (4.9 sq mi), from a satellite image of Aug 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sutton · AQI 71 (Moderate)
Sutton's tree count comes to 139,801 trees across 4.9 sq mi (12.57 km²), already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Sutton today: AQI 71, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Merton - Mitcham, 4.1 mi (6.6 km) away · median of 6 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
20.0
PM10
34.0
NO₂
35.0
O₃
—
SO₂
—
CO
—
Data: OpenAQ · London Air Quality Network
- 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 Sutton's daily AQI at 73 on average, from 54 on Nov 5 to an hourly peak of 103 on Nov 6.
This is the US EPA AQI. How it differs from the UK's Daily Air Quality Index
Where Sutton stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sutton: Healthy tree cover
44.5% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
139,801
Target trees
139,801
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Sutton lost?
Since 2001, the area within 10 km of Sutton has lost about 51 hectares of forest (about 71 football pitches): under 1% of the forest it had in 2000. The biggest cause was logging (40%), after which forest can grow back. About 16 hectares (31%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 51 haabout 71 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 16 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 13 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 | 1 ha | 2 ha | 3 ha |
| 2002 | under 1 ha | under 1 ha | under 1 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 | 2 ha | 2 ha |
| 2007 | under 1 ha | 2 ha | 2 ha |
| 2008 | 3 ha | 4 ha | 8 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 | 4 ha | 6 ha | 10 ha |
| 2014 | 5 ha | 8 ha | 13 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 | 4 ha | 4 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 | 1 ha | 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 | 3 ha | 3 ha |
What is causing deforestation around Sutton?
- Loggingcan grow back40% · 20 ha
- Towns and roadscleared for good29% · 15 ha
- Farms, pasture and plantationscleared for good3% · 2 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
- 16,500 ha
- Forest in 2020
- 16,800 ha
- Overall change
- +300 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sutton stayed about the same size, at about 16,800 hectares: new forest grew on about 402 hectares, and about 102 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 Sutton
Same 2 km radius, same index — so they compare directly.
- London18.2 km
United Kingdom
- Tree cover
- 18%
- Air quality
- 56
- Woking25.2 km
United Kingdom
- Tree cover
- 54%
- Air quality
- 100
- Bexley26.2 km
United Kingdom
- Tree cover
- 40%
- Air quality
- 56
- Crawley26.4 km
United Kingdom
- Tree cover
- 33%
- Air quality
- 87
- Harrow27.0 km
United Kingdom
- Tree cover
- 29%
- Air quality
- 52
- Barking28.3 km
United Kingdom
- Tree cover
- 16%
- Air quality
- 56
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Frequently asked
Questions about Sutton
What is the air quality (AQI) in Sutton right now?
The latest reading for Sutton shows an AQI of 71 (Moderate), measured Nov 11, 15:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Merton - Mitcham, 4.1 mi (6.6 km) away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Sutton today?
At AQI 71 (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 Sutton been like this week?
Over the last 7 days, the CAMS air-quality model put Sutton's daily AQI at 73 on average, from 54 on Nov 5 to an hourly peak of 103 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Sutton's AQI the same as the UK's Daily Air Quality Index?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. The UK's Daily Air Quality Index (DAQI), published by Defra, runs from 1 to 10: 1–3 low, 4–6 moderate, 7–9 high and 10 very high. It is a different scale altogether, so a US AQI figure can't be read on it directly; both, though, are built from the same main pollutants, with fine particles (PM2.5) usually the one that decides the reading.
How much forest has the area around Sutton lost since 2001?
Since 2001, the area within 10 km of Sutton has lost about 51 hectares of forest (about 71 football pitches): under 1% of the forest it had in 2000. The biggest cause was logging (40%), after which forest can grow back. About 16 hectares (31%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Sutton stayed about the same size, at about 16,800 hectares: new forest grew on about 402 hectares, and about 102 hectares were lost.
What is the tree count in Sutton?
Sutton has an estimated 139,801 trees across the 4.9 sq mi (12.57 km²) measured — 44.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Sutton need?
Sutton has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Sutton's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sutton, 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 1.2 mi (2 km) radius around Sutton; the tree count is an estimate derived from that cover.
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