City report · French Guiana
Saint-Laurent-du-Maroni Air quality today
Air quality in Saint-Laurent-du-Maroni currently reads AQI 55 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 55
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.3
- tree cover
- 42.4%
- trees in this area
- 69.3K
- more trees needed
- 0
Measured across a 2 km radius around Saint-Laurent-du-Maroni, French Guiana (12.57 km²), from a satellite image of Sep 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Saint-Laurent-du-Maroni · AQI 55 (Moderate)
Saint-Laurent-du-Maroni's tree count comes to 69,266 trees across 6.54 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Saint-Laurent-du-Maroni today: AQI 55, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 205 km, e.g. Kourou and Cayenne
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.3
PM10
7.9
NO₂
0.7
O₃
41.0
SO₂
0.2
CO
131.0
- 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 Saint-Laurent-du-Maroni's daily AQI at 37 on average, from 24 on Nov 9 to an hourly peak of 62 on Nov 5.
Where Saint-Laurent-du-Maroni stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Saint-Laurent-du-Maroni: Healthy tree cover
42.4% tree cover against a 30% healthy-neighborhood target, across 6.54 km² of land.
Trees in this area
69,266
Target trees
69,266
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Saint-Laurent-du-Maroni lost?
Since 2001, the area within 10 km of Saint-Laurent-du-Maroni has lost about 4,320 hectares of forest (about 6,100 football pitches): 17% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from August 2017 of a 5 × 5 km area about 6 km west of the city center.
- Forest lost since 2001
- 4,320 haabout 6,100 football pitches
- Share of its forest
- 17%of what there was in 2000
- Cleared for good
- 3,950 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 153 hectares a year in 2021–2025, against 201 hectares a year in 2016–2020. The worst year was 2012, when about 483 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 | 113 ha | 9 ha | 122 ha |
| 2002 | 73 ha | 4 ha | 77 ha |
| 2003 | 109 ha | 13 ha | 122 ha |
| 2004 | 206 ha | 14 ha | 220 ha |
| 2005 | 98 ha | 10 ha | 108 ha |
| 2006 | 88 ha | 4 ha | 92 ha |
| 2007 | 136 ha | 13 ha | 149 ha |
| 2008 | 217 ha | 16 ha | 233 ha |
| 2009 | 189 ha | 16 ha | 205 ha |
| 2010 | 96 ha | 8 ha | 104 ha |
| 2011 | 60 ha | 16 ha | 76 ha |
| 2012 | 453 ha | 30 ha | 483 ha |
| 2013 | 151 ha | 23 ha | 174 ha |
| 2014 | 198 ha | 20 ha | 218 ha |
| 2015 | 151 ha | 17 ha | 168 ha |
| 2016 | 347 ha | 26 ha | 373 ha |
| 2017 | 185 ha | 14 ha | 199 ha |
| 2018 | 97 ha | 11 ha | 108 ha |
| 2019 | 146 ha | 16 ha | 162 ha |
| 2020 | 147 ha | 17 ha | 164 ha |
| 2021 | 85 ha | 7 ha | 92 ha |
| 2022 | 92 ha | 13 ha | 105 ha |
| 2023 | 219 ha | 17 ha | 236 ha |
| 2024 | 168 ha | 19 ha | 187 ha |
| 2025 | 131 ha | 16 ha | 147 ha |
What is causing deforestation around Saint-Laurent-du-Maroni?
- Farms, pasture and plantationscleared for good77% · 3,310 ha
- Towns and roadscleared for good14% · 602 ha
- Shifting farmingcan grow back7.8% · 338 ha
Also: mining and energy, logging, storms, floods and other natural causes, wildfires, 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
- 24,500 ha
- Forest in 2020
- 23,000 ha
- Overall change
- −1,520 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Saint-Laurent-du-Maroni shrank from about 24,500 hectares to 23,000 hectares, a net loss of about 1,520 hectares (−6.2%). New forest grew on about 121 hectares, but 1,640 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 Saint-Laurent-du-Maroni
Same 2 km radius, same index — so they compare directly.
- Paramaribo132.3 km
Suriname
- Tree cover
- 31%
- Air quality
- 32
- New Amsterdam394.5 km
Guyana
- Tree cover
- 32%
- Air quality
- 38
- Linden476.6 km
Guyana
- Tree cover
- 35%
- Air quality
- 48
- Georgetown478.6 km
Guyana
- Tree cover
- 11%
- Air quality
- 33
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Frequently asked
Questions about Saint-Laurent-du-Maroni
What is the air quality (AQI) in Saint-Laurent-du-Maroni right now?
The latest reading for Saint-Laurent-du-Maroni shows an AQI of 55 (Moderate), observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 205 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 Saint-Laurent-du-Maroni today?
At AQI 55 (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 Saint-Laurent-du-Maroni been like this week?
Over the last 7 days, the CAMS air-quality model put Saint-Laurent-du-Maroni's daily AQI at 37 on average, from 24 on Nov 9 to an hourly peak of 62 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 Saint-Laurent-du-Maroni lost since 2001?
Since 2001, the area within 10 km of Saint-Laurent-du-Maroni has lost about 4,320 hectares of forest (about 6,100 football pitches): 17% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss has stayed about the same: about 153 hectares a year in 2021–2025, against 201 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Saint-Laurent-du-Maroni shrank from about 24,500 hectares to 23,000 hectares, a net loss of about 1,520 hectares (−6.2%). New forest grew on about 121 hectares, but 1,640 hectares were lost.
What is the tree count in Saint-Laurent-du-Maroni?
Saint-Laurent-du-Maroni has an estimated 69,266 trees across the 6.54 km² of land measured — 42.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Saint-Laurent-du-Maroni need?
Saint-Laurent-du-Maroni has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Saint-Laurent-du-Maroni'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 Saint-Laurent-du-Maroni; the tree count is an estimate derived from that cover.
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