City report · Algeria
Chlef Air quality today
Air quality in Chlef currently reads AQI 43 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 43
Good
- PM2.5, fine particles (µg/m³)
- 8.6
- tree cover
- 13.6%
- trees in this area
- 42.7K
- more trees needed
- 51.5K
Measured across a 2 km radius around Chlef, Algeria (12.57 km²), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Chlef · AQI 43 (Good)
Chlef's tree count comes to 42,726 trees across 12.57 km², 16 points below the 30% tree-cover level considered healthy for this area, so roughly 51,522 more trees would close the gap.
Air quality detail
Air quality in Chlef today: AQI 43, Good
Main pollutant: PM2.5 · Observed Nov 10, 18:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.6
PM10
13.3
NO₂
10.5
O₃
51.0
SO₂
3.0
CO
139.0
- 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 Chlef's daily AQI at 41 on average, from 37 on Nov 6 to an hourly peak of 54 on Nov 5.
Where Chlef stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chlef: Critically low
13.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
42,726
Target trees
94,248
More trees needed
51,522
CO₂ if planted / yr
1,133 t
Deforestation · 2001–2025
How much forest has Chlef lost?
Since 2001, the area within 10 km of Chlef has lost about 13 hectares of forest (about 19 football pitches): 7.4% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 13 haabout 19 football pitches
- Share of its forest
- 7.4%of what there was in 2000
- Cleared for good
- 12 hadeforestation: turned into farms, mines or towns
The worst year was 2020, when about 2 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 | under 1 ha | under 1 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 | 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 | 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 | under 1 ha | under 1 ha |
| 2018 | 2 ha | under 1 ha | 2 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 2 ha | under 1 ha | 2 ha |
| 2021 | 2 ha | under 1 ha | 2 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Chlef?
- Farms, pasture and plantationscleared for good81% · 11 ha
- Towns and roadscleared for good4.5% · under 1 ha
- Unknown causescause unknown15% · 2 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
- 237 ha
- Forest in 2020
- 258 ha
- Overall change
- +21 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chlef grew from about 237 hectares to 258 hectares, a net gain of about 21 hectares (+8.9%). New forest grew on about 32 hectares, while 11 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 Chlef
What is the air quality (AQI) in Chlef right now?
The latest reading for Chlef shows an AQI of 43 (Good), observed Nov 10, 18:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Chlef today?
At AQI 43 (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 Chlef been like this week?
Over the last 7 days, the CAMS air-quality model put Chlef's daily AQI at 41 on average, from 37 on Nov 6 to an hourly peak of 54 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Chlef lost since 2001?
Since 2001, the area within 10 km of Chlef has lost about 13 hectares of forest (about 19 football pitches): 7.4% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Chlef grew from about 237 hectares to 258 hectares, a net gain of about 21 hectares (+8.9%). New forest grew on about 32 hectares, while 11 hectares were lost.
What is the tree count in Chlef?
Chlef has an estimated 42,726 trees across the 12.57 km² measured — 13.6% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Chlef need?
Chlef needs roughly 51,522 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,133 t of extra CO₂ absorbed per year once grown.
How are Chlef's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Chlef; the tree count is an estimate derived from that cover.
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