City report · Madagascar
Fianarantsoa Air quality today
Air quality in Fianarantsoa currently reads AQI 18 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 18
Good
- PM2.5, fine particles (µg/m³)
- 2.6
- tree cover
- 32.8%
- trees in this area
- 103K
- more trees needed
- 0
Measured across a 2 km radius around Ambalapaiso, Fianarantsoa, Madagascar (12.57 km²), from a satellite image of Sep 11, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Fianarantsoa · AQI 18 (Good)
Fianarantsoa's tree count comes to 103,044 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Fianarantsoa today: AQI 18, Good
Main pollutant: PM2.5 · Observed Nov 10, 21:00 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
2.6
PM10
2.7
NO₂
1.8
O₃
36.0
SO₂
0.8
CO
133.0
- 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 Fianarantsoa's daily AQI at 23 on average, from 14 on Nov 6 to an hourly peak of 52 on Nov 9.
Where Fianarantsoa stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Fianarantsoa: Healthy tree cover
32.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
103,044
Target trees
103,044
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Fianarantsoa lost?
Since 2001, the area within 10 km of Fianarantsoa has lost about 787 hectares of forest (about 1,100 football pitches): 23% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2018: satellite photo from August 2018 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 787 haabout 1,100 football pitches
- Share of its forest
- 23%of what there was in 2000
- Cleared for good
- 631 hadeforestation: turned into farms, mines or towns
The worst year was 2007, when about 94 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 | 5 ha | under 1 ha | 5 ha |
| 2002 | 22 ha | 3 ha | 25 ha |
| 2003 | 25 ha | 4 ha | 29 ha |
| 2004 | 6 ha | 14 ha | 20 ha |
| 2005 | 30 ha | 3 ha | 33 ha |
| 2006 | 36 ha | 4 ha | 40 ha |
| 2007 | 87 ha | 8 ha | 94 ha |
| 2008 | 31 ha | 2 ha | 33 ha |
| 2009 | 44 ha | 2 ha | 46 ha |
| 2010 | 32 ha | 3 ha | 35 ha |
| 2011 | 22 ha | 6 ha | 28 ha |
| 2012 | 22 ha | 9 ha | 32 ha |
| 2013 | 21 ha | under 1 ha | 22 ha |
| 2014 | 41 ha | 6 ha | 47 ha |
| 2015 | 23 ha | 2 ha | 25 ha |
| 2016 | 18 ha | 4 ha | 22 ha |
| 2017 | 33 ha | 6 ha | 39 ha |
| 2018 | 9 ha | 1 ha | 10 ha |
| 2019 | 9 ha | 7 ha | 16 ha |
| 2020 | 13 ha | 4 ha | 18 ha |
| 2021 | 38 ha | 4 ha | 43 ha |
| 2022 | 23 ha | 49 ha | 72 ha |
| 2023 | 23 ha | 7 ha | 30 ha |
| 2024 | 10 ha | 5 ha | 14 ha |
| 2025 | 8 ha | 3 ha | 11 ha |
What is causing deforestation around Fianarantsoa?
- Farms, pasture and plantationscleared for good77% · 609 ha
- Loggingcan grow back20% · 155 ha
- Towns and roadscleared for good2.7% · 21 ha
Also: shifting farming, 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
- 5,140 ha
- Forest in 2020
- 4,880 ha
- Overall change
- −257 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Fianarantsoa shrank from about 5,140 hectares to 4,880 hectares, a net loss of about 257 hectares (−5%). New forest grew on about 82 hectares, but 339 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 Fianarantsoa
Same 2 km radius, same index — so they compare directly.
- Antananarivo286.2 km
Madagascar
- Tree cover
- 16%
- Air quality
- 38
- Toamasina440.1 km
Madagascar
- Tree cover
- 17%
- Air quality
- 54
- Mahajanga642.9 km
Madagascar
- Tree cover
- 13%
- Air quality
- 38
- Saint-Paul849.8 km
Reunion
- Tree cover
- 44%
- Air quality
- 27
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Frequently asked
Questions about Fianarantsoa
What is the air quality (AQI) in Fianarantsoa right now?
The latest reading for Fianarantsoa shows an AQI of 18 (Good), observed Nov 10, 21:00 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 Fianarantsoa today?
At AQI 18 (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 Fianarantsoa been like this week?
Over the last 7 days, the CAMS air-quality model put Fianarantsoa's daily AQI at 23 on average, from 14 on Nov 6 to an hourly peak of 52 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Fianarantsoa lost since 2001?
Since 2001, the area within 10 km of Fianarantsoa has lost about 787 hectares of forest (about 1,100 football pitches): 23% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Fianarantsoa shrank from about 5,140 hectares to 4,880 hectares, a net loss of about 257 hectares (−5%). New forest grew on about 82 hectares, but 339 hectares were lost.
What is the tree count in Fianarantsoa?
Fianarantsoa has an estimated 103,044 trees across the 12.57 km² measured — 32.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Fianarantsoa need?
Fianarantsoa has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Fianarantsoa'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 Ambalapaiso; the tree count is an estimate derived from that cover.
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