City report · England, United Kingdom
Woking Air quality today
Air quality in Woking currently reads AQI 100 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 100
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 35.2
- tree cover
- 54.3%
- trees in this area
- 171K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Woking, UK (4.9 sq mi), from a satellite image of Aug 28, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Woking · AQI 100 (Moderate)
Woking's tree count comes to 170,588 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 Woking today: AQI 100, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Lightwater, 5.7 mi (9.1 km) away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
35.2
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Graham
- 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 Woking's daily AQI at 71 on average, from 41 on Nov 4 to an hourly peak of 98 on Nov 6.
This is the US EPA AQI. How it differs from the UK's Daily Air Quality Index
Where Woking stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Woking: Healthy tree cover
54.3% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
170,588
Target trees
170,588
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Woking lost?
Since 2001, the area within 10 km of Woking has lost about 343 hectares of forest (about 480 football pitches): 3.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 41 hectares (12%) 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 east of the city center.
- Forest lost since 2001
- 343 haabout 480 football pitches
- Share of its forest
- 3.1%of what there was in 2000
- Cleared for good
- 41 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 67 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 | 2 ha | 3 ha |
| 2002 | under 1 ha | 2 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 | 3 ha | 44 ha | 47 ha |
| 2007 | 1 ha | 4 ha | 5 ha |
| 2008 | 5 ha | 62 ha | 67 ha |
| 2009 | under 1 ha | 12 ha | 12 ha |
| 2010 | 3 ha | 25 ha | 28 ha |
| 2011 | under 1 ha | 5 ha | 5 ha |
| 2012 | under 1 ha | under 1 ha | 2 ha |
| 2013 | 2 ha | 22 ha | 24 ha |
| 2014 | 4 ha | 19 ha | 23 ha |
| 2015 | under 1 ha | 6 ha | 6 ha |
| 2016 | 1 ha | 8 ha | 9 ha |
| 2017 | 2 ha | 13 ha | 15 ha |
| 2018 | under 1 ha | 9 ha | 9 ha |
| 2019 | 1 ha | 9 ha | 11 ha |
| 2020 | 2 ha | 2 ha | 3 ha |
| 2021 | 3 ha | 5 ha | 8 ha |
| 2022 | under 1 ha | 7 ha | 8 ha |
| 2023 | 3 ha | 16 ha | 19 ha |
| 2024 | 2 ha | 26 ha | 28 ha |
| 2025 | 6 ha | 5 ha | 11 ha |
What is causing deforestation around Woking?
- Loggingcan grow back80% · 273 ha
- Towns and roadscleared for good12% · 41 ha
- Wildfirescan grow back2.8% · 10 ha
Also: farms, pasture and plantations, 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
- 16,900 ha
- Forest in 2020
- 17,100 ha
- Overall change
- +254 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Woking stayed about the same size, at about 17,100 hectares: new forest grew on about 534 hectares, and about 280 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 Woking
Same 2 km radius, same index — so they compare directly.
- Slough21.3 km
United Kingdom
- Tree cover
- 21%
- Air quality
- 57
- Sutton25.2 km
United Kingdom
- Tree cover
- 45%
- Air quality
- 71
- Reading32.4 km
United Kingdom
- Tree cover
- 28%
- Air quality
- 83
- Harrow32.8 km
United Kingdom
- Tree cover
- 29%
- Air quality
- 52
- Crawley34.8 km
United Kingdom
- Tree cover
- 33%
- Air quality
- 87
- London36.5 km
United Kingdom
- Tree cover
- 18%
- Air quality
- 56
Build your own
Compare Woking with anywhere
This place
Woking
Use this data
Put Woking's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Woking
What is the air quality (AQI) in Woking right now?
The latest reading for Woking shows an AQI of 100 (Moderate), measured Nov 11, 16:00 local time by the Lightwater ground monitoring station, 5.7 mi (9.1 km) away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Woking today?
At AQI 100 (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 Woking been like this week?
Over the last 7 days, the CAMS air-quality model put Woking's daily AQI at 71 on average, from 41 on Nov 4 to an hourly peak of 98 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Woking'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 Woking lost since 2001?
Since 2001, the area within 10 km of Woking has lost about 343 hectares of forest (about 480 football pitches): 3.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 41 hectares (12%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Woking stayed about the same size, at about 17,100 hectares: new forest grew on about 534 hectares, and about 280 hectares were lost.
What is the tree count in Woking?
Woking has an estimated 170,588 trees across the 4.9 sq mi (12.57 km²) measured — 54.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Woking need?
Woking has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Woking's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Woking, 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 Woking; 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