City report · England, United Kingdom
Worthing Air quality today
Air quality in Worthing currently reads AQI 66 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 66
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 17.3
- tree cover
- 13.4%
- trees in this area
- 34.1K
- more trees needed
- 42.2K
Measured across a 1.2 mi (2 km) radius around Worthing, 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.
Worthing · AQI 66 (Moderate)
Worthing's tree count comes to 34,099 trees across 3.9 sq mi (10.18 km²) of land, 17 points below the 30% tree-cover level considered healthy for this area, so roughly 42,242 more trees would close the gap.
Air quality detail
Air quality in Worthing today: AQI 66, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Storrington Roadside, United Kingdom, 7.6 mi (12.2 km) away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
17.3
PM10
24.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, UK-AIR, air quality information resource - Defra, UK
- 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 Worthing's daily AQI at 65 on average, from 46 on Nov 4 to an hourly peak of 82 on Nov 8.
This is the US EPA AQI. How it differs from the UK's Daily Air Quality Index
Where Worthing stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Worthing: Critically low
13.4% tree cover against a 30% healthy-neighborhood target, across 3.9 sq mi (10.18 km²) of land.
Trees in this area
34,099
Target trees
76,341
More trees needed
42,242
CO₂ if planted / yr
929.3 t
Deforestation · 2001–2025
How much forest has Worthing lost?
Since 2001, the area within 10 km of Worthing has lost about 16 hectares of forest (about 22 football pitches): 1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 2 hectares (11%) 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
- 16 haabout 22 football pitches
- Share of its forest
- 1%of what there was in 2000
- Cleared for good
- 2 hadeforestation: turned into farms, mines or towns
The worst year was 2015, when about 6 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 | 2 ha | 3 ha | 5 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 | 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 | 3 ha | 3 ha |
| 2015 | under 1 ha | 6 ha | 6 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 Worthing?
- Loggingcan grow back59% · 10 ha
- Farms, pasture and plantationscleared for good11% · 2 ha
- Unknown causescause unknown31% · 5 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
- 2,370 ha
- Forest in 2020
- 2,480 ha
- Overall change
- +109 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Worthing grew from about 2,370 hectares to 2,480 hectares, a net gain of about 109 hectares (+4.6%). New forest grew on about 131 hectares, while 22 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 Worthing
Same 2 km radius, same index — so they compare directly.
- Brighton16.6 km
United Kingdom
- Tree cover
- 20%
- Air quality
- 99
- Crawley35.5 km
United Kingdom
- Tree cover
- 33%
- Air quality
- 87
- Eastbourne46.7 km
United Kingdom
- Tree cover
- 23%
- Air quality
- 61
- Portsmouth50.3 km
United Kingdom
- Tree cover
- 10%
- Air quality
- 56
- Woking57.2 km
United Kingdom
- Tree cover
- 54%
- Air quality
- 100
- Sutton60.4 km
United Kingdom
- Tree cover
- 45%
- Air quality
- 71
Build your own
Compare Worthing with anywhere
This place
Worthing
Use this data
Put Worthing's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Worthing
What is the air quality (AQI) in Worthing right now?
The latest reading for Worthing shows an AQI of 66 (Moderate), measured Nov 11, 15:00 local time by the Storrington Roadside, United Kingdom ground monitoring station, 7.6 mi (12.2 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 Worthing today?
At AQI 66 (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 Worthing been like this week?
Over the last 7 days, the CAMS air-quality model put Worthing's daily AQI at 65 on average, from 46 on Nov 4 to an hourly peak of 82 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Worthing'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 Worthing lost since 2001?
Since 2001, the area within 10 km of Worthing has lost about 16 hectares of forest (about 22 football pitches): 1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 2 hectares (11%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Worthing grew from about 2,370 hectares to 2,480 hectares, a net gain of about 109 hectares (+4.6%). New forest grew on about 131 hectares, while 22 hectares were lost.
What is the tree count in Worthing?
Worthing has an estimated 34,099 trees across the 3.9 sq mi (10.18 km²) of land measured — 13.4% tree cover, 17 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Worthing need?
Worthing needs roughly 42,242 more trees to close a 17-point shortfall against its 30% tree-cover target — about 929.3 t of extra CO₂ absorbed per year once grown.
How are Worthing's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Worthing, 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 Worthing; 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