City report · Algeria
Tlemcen Air quality today
Air quality in Tlemcen currently reads AQI 57 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 57
Moderate
- PM2.5, fine particles (µg/m³)
- 11.9
- tree cover
- 11.5%
- trees in this area
- 36.1K
- more trees needed
- 58.1K
Measured across a 2 km radius around Tlemcen, Algeria (12.57 km²), from a satellite image of Sep 11, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tlemcen · AQI 57 (Moderate)
Tlemcen's tree count comes to 36,128 trees across 12.57 km², 19 points below the 30% tree-cover level considered healthy for this area, so roughly 58,119 more trees would close the gap.
Air quality detail
Air quality in Tlemcen today: AQI 57, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 18:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 245 km, e.g. Nador and Almería
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
11.9
PM10
13.5
NO₂
5.6
O₃
54.0
SO₂
4.8
CO
132.0
- 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 Tlemcen's daily AQI at 41 on average, from 30 on Nov 5 to an hourly peak of 54 on Nov 4.
Where Tlemcen stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tlemcen: Critically low
11.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
36,128
Target trees
94,247
More trees needed
58,119
CO₂ if planted / yr
1,279 t
Deforestation · 2001–2025
How much forest has Tlemcen lost?
Since 2001, the area within 10 km of Tlemcen has lost about 91 hectares of forest (about 130 football pitches): 5.6% of the forest it had in 2000. Most of it was lost to wildfires, so much of it can grow back. About 2 hectares (2%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 6 km southwest of the city center.
- Forest lost since 2001
- 91 haabout 130 football pitches
- Share of its forest
- 5.6%of what there was in 2000
- Cleared for good
- 2 hadeforestation: turned into farms, mines or towns
The worst year was 2023, when about 42 hectares of forest were lost, mostly to wildfires.
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 | 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 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | 2 ha | 3 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | 6 ha | 6 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 | 3 ha | 3 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 | 2 ha | 2 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | 42 ha | 42 ha |
| 2024 | under 1 ha | 21 ha | 21 ha |
| 2025 | under 1 ha | 7 ha | 7 ha |
What is causing deforestation around Tlemcen?
- Wildfirescan grow back96% · 87 ha
- Farms, pasture and plantationscleared for good1.1% · 1 ha
- Unknown causescause unknown2.1% · 2 ha
Also: towns and roads.
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
- 3,280 ha
- Forest in 2020
- 3,550 ha
- Overall change
- +274 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tlemcen grew from about 3,280 hectares to 3,550 hectares, a net gain of about 274 hectares (+8.4%). New forest grew on about 282 hectares, while 9 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 Tlemcen
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Tlemcen with anywhere
This place
Tlemcen
Use this data
Put Tlemcen's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Tlemcen
What is the air quality (AQI) in Tlemcen right now?
The latest reading for Tlemcen shows an AQI of 57 (Moderate), observed Nov 10, 18:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Tlemcen today?
At AQI 57 (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 Tlemcen been like this week?
Over the last 7 days, the CAMS air-quality model put Tlemcen's daily AQI at 41 on average, from 30 on Nov 5 to an hourly peak of 54 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Tlemcen lost since 2001?
Since 2001, the area within 10 km of Tlemcen has lost about 91 hectares of forest (about 130 football pitches): 5.6% of the forest it had in 2000. Most of it was lost to wildfires, so much of it can grow back. About 2 hectares (2%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Tlemcen grew from about 3,280 hectares to 3,550 hectares, a net gain of about 274 hectares (+8.4%). New forest grew on about 282 hectares, while 9 hectares were lost.
What is the tree count in Tlemcen?
Tlemcen has an estimated 36,128 trees across the 12.57 km² measured — 11.5% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tlemcen need?
Tlemcen needs roughly 58,119 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,279 t of extra CO₂ absorbed per year once grown.
How are Tlemcen'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 Tlemcen; 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