Saint Helier
2 km around St Helier
Air quality now
AQI 33
25.7%
tree cover
10.7K more trees would reach 30% tree cover
Europe · air quality report · 1 city
Jersey air quality today The AQI right now, city by city
Airleaf measures 1 city in Jersey. Saint Helier reads AQI 33 right now.
- cities measured
- 1
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Jersey
Air quality in Saint Helier right now
Good
Deforestation · 2001–2025
How much forest has Jersey lost?
Since 2001, Jersey has lost about 30 hectares of forest (about 42 football pitches): 2.3% of the forest it had in 2000. The biggest cause was logging (47%), after which forest can grow back. About 8 hectares (27%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 30 haabout 42 football pitches
- Share of its forest
- 2.3%of what there was in 2000
- Cleared for good
- 8 hadeforestation: turned into farms, mines or towns
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 | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | 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 | 1 ha | 2 ha |
| 2009 | under 1 ha | under 1 ha | 1 ha |
| 2010 | 2 ha | 4 ha | 6 ha |
| 2011 | under 1 ha | 3 ha | 3 ha |
| 2012 | 1 ha | 5 ha | 7 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 | 1 ha | 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 | 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 1 ha | under 1 ha | 1 ha |
| 2025 | under 1 ha | 1 ha | 2 ha |
The worst year was 2012, when about 7 hectares of forest were lost.
What is causing deforestation in Jersey?
- Loggingcan grow back47% · 14 ha
- Towns and roadscleared for good15% · 4 ha
- Farms, pasture and plantationscleared for good12% · 4 ha
Also: unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. How it's measured
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Frequently asked
Air quality in Jersey: your questions answered
What is the air quality in Jersey today?
Airleaf measures 1 city in Jersey. Saint Helier reads AQI 33 right now.
How much forest has Jersey lost since 2001?
About 30 ha from 2001 to 2025, 2% of the forest it had in 2000, from the University of Maryland's yearly satellite maps of forest loss. 8 ha of it was cleared for good, for farms, mines or towns.
How does Airleaf measure air quality in Jersey?
Each city's reading is the US EPA air quality index, from ground monitoring stations where one has reported recently nearby, and from the CAMS atmospheric model elsewhere; each city's report says which. Tree cover is measured over the same 2 km radius in every city, so the cities compare like for like.
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