City report · Haiti
Saint-Marc Air quality today
Air quality in Saint-Marc currently reads AQI 71 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 71
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 17.2
- tree cover
- 11.4%
- trees in this area
- 19.9K
- more trees needed
- 32.4K
Measured across a 2 km radius around Saint-Marc, Haiti (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Saint-Marc · AQI 71 (Moderate)
Saint-Marc's tree count comes to 19,877 trees across 6.98 km² of land, 19 points below the 30% tree-cover level considered healthy for this area, so roughly 32,431 more trees would close the gap.
Air quality detail
Air quality in Saint-Marc today: AQI 71, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 08:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
17.2
PM10
17.3
NO₂
4.3
O₃
46.0
SO₂
1.4
CO
575.0
- 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-Marc's daily AQI at 64 on average, from 54 on Nov 8 to an hourly peak of 117 on Nov 6.
Where Saint-Marc stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Saint-Marc: Critically low
11.4% tree cover against a 30% healthy-neighborhood target, across 6.98 km² of land.
Trees in this area
19,877
Target trees
52,308
More trees needed
32,431
CO₂ if planted / yr
713.5 t
Deforestation · 2001–2025
How much forest has Saint-Marc lost?
Since 2001, the area within 10 km of Saint-Marc has lost about 611 hectares of forest (about 860 football pitches): 11% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km southwest of the city center.
- Forest lost since 2001
- 611 haabout 860 football pitches
- Share of its forest
- 11%of what there was in 2000
- Cleared for good
- 573 hadeforestation: turned into farms, mines or towns
The worst year was 2002, when about 110 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 | 24 ha | under 1 ha | 24 ha |
| 2002 | 100 ha | 10 ha | 110 ha |
| 2003 | 10 ha | 1 ha | 11 ha |
| 2004 | 77 ha | under 1 ha | 78 ha |
| 2005 | 14 ha | under 1 ha | 15 ha |
| 2006 | 2 ha | under 1 ha | 3 ha |
| 2007 | 41 ha | under 1 ha | 41 ha |
| 2008 | 21 ha | under 1 ha | 21 ha |
| 2009 | 9 ha | under 1 ha | 9 ha |
| 2010 | 28 ha | 1 ha | 29 ha |
| 2011 | 80 ha | 2 ha | 82 ha |
| 2012 | 34 ha | under 1 ha | 35 ha |
| 2013 | 46 ha | under 1 ha | 47 ha |
| 2014 | 7 ha | under 1 ha | 7 ha |
| 2015 | 11 ha | 1 ha | 12 ha |
| 2016 | 8 ha | 2 ha | 9 ha |
| 2017 | 4 ha | 4 ha | 8 ha |
| 2018 | 1 ha | under 1 ha | 1 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | 12 ha | under 1 ha | 13 ha |
| 2021 | 18 ha | under 1 ha | 18 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 9 ha | 6 ha | 15 ha |
| 2024 | 8 ha | 4 ha | 11 ha |
| 2025 | 6 ha | 1 ha | 7 ha |
What is causing deforestation around Saint-Marc?
- Farms, pasture and plantationscleared for good75% · 456 ha
- Towns and roadscleared for good19% · 116 ha
- Shifting farmingcan grow back5.2% · 32 ha
Also: mining and energy, 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
- 7,360 ha
- Forest in 2020
- 7,280 ha
- Overall change
- −72 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Saint-Marc stayed about the same size, at about 7,280 hectares: new forest grew on about 98 hectares, and about 170 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-Marc
Same 2 km radius, same index — so they compare directly.
- Arcahaie42.8 km
Haiti
- Tree cover
- 64%
- Air quality
- 59
- Léogâne67.1 km
Haiti
- Tree cover
- 63%
- Air quality
- 122
- Tigwav77.6 km
Haiti
- Tree cover
- 64%
- Air quality
- 134
- Croix-des-Bouquets77.6 km
Haiti
- Tree cover
- 22%
- Air quality
- 145
Also compared:Saint-Marc vs Port-de-Paix
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Frequently asked
Questions about Saint-Marc
What is the air quality (AQI) in Saint-Marc right now?
The latest reading for Saint-Marc shows an AQI of 71 (Moderate), observed Nov 10, 08:00 local time via Open-Meteo / CAMS, 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-Marc today?
At AQI 71 (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-Marc been like this week?
Over the last 7 days, the CAMS air-quality model put Saint-Marc's daily AQI at 64 on average, from 54 on Nov 8 to an hourly peak of 117 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Saint-Marc lost since 2001?
Since 2001, the area within 10 km of Saint-Marc has lost about 611 hectares of forest (about 860 football pitches): 11% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Saint-Marc stayed about the same size, at about 7,280 hectares: new forest grew on about 98 hectares, and about 170 hectares were lost.
What is the tree count in Saint-Marc?
Saint-Marc has an estimated 19,877 trees across the 6.98 km² of land measured — 11.4% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Saint-Marc need?
Saint-Marc needs roughly 32,431 more trees to close a 19-point shortfall against its 30% tree-cover target — about 713.5 t of extra CO₂ absorbed per year once grown.
How are Saint-Marc'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-Marc; the tree count is an estimate derived from that cover.
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