City report · Costa Rica
Liberia Air quality today
Air quality in Liberia currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 14
Good
- PM2.5, fine particles (µg/m³)
- 2.5
- tree cover
- 34.6%
- trees in this area
- 109K
- more trees needed
- 0
Measured across a 2 km radius around Provincia de Guanacaste, Liberia, Barrio El Invu, Costa Rica (12.57 km²), from a satellite image of Aug 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Liberia · AQI 14 (Good)
Liberia's tree count comes to 108,699 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 Liberia today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 10, 13:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 205 km, e.g. Masaya and San José
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.5
PM10
2.2
NO₂
0.5
O₃
48.0
SO₂
0.5
CO
105.0
- 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 Liberia's daily AQI at 13 on average, from 6 on Nov 7 to an hourly peak of 30 on Nov 5.
Where Liberia stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Liberia: Healthy tree cover
34.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
108,699
Target trees
108,699
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Liberia lost?
Since 2001, the area within 10 km of Liberia has lost about 993 hectares of forest (about 1,400 football pitches): 8.4% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area about 4 km southwest of the city center.
- Forest lost since 2001
- 993 haabout 1,400 football pitches
- Share of its forest
- 8.4%of what there was in 2000
- Cleared for good
- 975 hadeforestation: turned into farms, mines or towns
The worst year was 2005, when about 134 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 | 77 ha | 2 ha | 79 ha |
| 2002 | 32 ha | under 1 ha | 32 ha |
| 2003 | 11 ha | under 1 ha | 12 ha |
| 2004 | 124 ha | 3 ha | 127 ha |
| 2005 | 132 ha | 2 ha | 134 ha |
| 2006 | 17 ha | under 1 ha | 18 ha |
| 2007 | 38 ha | under 1 ha | 39 ha |
| 2008 | 74 ha | 1 ha | 75 ha |
| 2009 | 76 ha | 2 ha | 77 ha |
| 2010 | 19 ha | under 1 ha | 19 ha |
| 2011 | 37 ha | under 1 ha | 38 ha |
| 2012 | 6 ha | under 1 ha | 6 ha |
| 2013 | 70 ha | 1 ha | 71 ha |
| 2014 | 40 ha | under 1 ha | 40 ha |
| 2015 | 8 ha | under 1 ha | 9 ha |
| 2016 | 47 ha | under 1 ha | 47 ha |
| 2017 | 25 ha | under 1 ha | 25 ha |
| 2018 | 24 ha | under 1 ha | 24 ha |
| 2019 | 18 ha | under 1 ha | 18 ha |
| 2020 | 13 ha | under 1 ha | 13 ha |
| 2021 | 20 ha | under 1 ha | 20 ha |
| 2022 | 29 ha | under 1 ha | 30 ha |
| 2023 | 16 ha | under 1 ha | 16 ha |
| 2024 | 9 ha | under 1 ha | 9 ha |
| 2025 | 15 ha | under 1 ha | 16 ha |
What is causing deforestation around Liberia?
- Farms, pasture and plantationscleared for good94% · 935 ha
- Towns and roadscleared for good4.1% · 40 ha
- Unknown causescause unknown1.8% · 18 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
- 14,300 ha
- Forest in 2020
- 14,100 ha
- Overall change
- −249 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Liberia stayed about the same size, at about 14,100 hectares: new forest grew on about 228 hectares, and about 476 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 Liberia
Same 2 km radius, same index — so they compare directly.
- Masaya165.2 km
Nicaragua
- Tree cover
- 35%
- Air quality
- 43
- Managua188.6 km
Nicaragua
- Tree cover
- 18%
- Air quality
- 43
- Paraíso193.4 km
Costa Rica
- Tree cover
- 37%
- Air quality
- 40
- León254.4 km
Nicaragua
- Tree cover
- 39%
- Air quality
- 46
Also compared:Liberia vs Limón
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Frequently asked
Questions about Liberia
What is the air quality (AQI) in Liberia right now?
The latest reading for Liberia shows an AQI of 14 (Good), observed Nov 10, 13:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 205 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Liberia today?
At AQI 14 (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 Liberia been like this week?
Over the last 7 days, the CAMS air-quality model put Liberia's daily AQI at 13 on average, from 6 on Nov 7 to an hourly peak of 30 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 Liberia lost since 2001?
Since 2001, the area within 10 km of Liberia has lost about 993 hectares of forest (about 1,400 football pitches): 8.4% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Liberia stayed about the same size, at about 14,100 hectares: new forest grew on about 228 hectares, and about 476 hectares were lost.
What is the tree count in Liberia?
Liberia has an estimated 108,699 trees across the 12.57 km² measured — 34.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Liberia need?
Liberia has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Liberia'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 Provincia de Guanacaste; the tree count is an estimate derived from that cover.
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