City report · Liberia
Monrovia Air quality today
Air quality in Monrovia currently reads AQI 86 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 86
Moderate
- PM2.5, fine particles (µg/m³)
- 27.8
- tree cover
- 25.1%
- trees in this area
- 33.2K
- more trees needed
- 6.5K
Measured across a 1.2 mi (2 km) radius around Capitol Hill, Monrovia, Liberia (4.9 sq mi), from a satellite image of Oct 31, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Monrovia · AQI 86 (Moderate)
Monrovia's tree count comes to 33,198 trees across 2.0 sq mi (5.29 km²) of land, 5 points below the 30% tree-cover level considered healthy for this area, so roughly 6,481 more trees would close the gap.
Air quality detail
Air quality in Monrovia today: AQI 86, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Duport Road_Soko Sackor Compound (UMU-EPIC Liberia), 8.5 mi (13.6 km) away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
27.8
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, United Methodist University
- 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 Monrovia's daily AQI at 47 on average, from 34 on Nov 5 to an hourly peak of 69 on Nov 7.
Where Monrovia stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Monrovia: Below target
25.1% tree cover against a 30% healthy-neighborhood target, across 2.0 sq mi (5.29 km²) of land.
Trees in this area
33,198
Target trees
39,679
More trees needed
6,481
CO₂ if planted / yr
142.6 t
Deforestation · 2001–2025
How much forest has Monrovia lost?
Since 2001, the area within 10 km of Monrovia has lost about 53 hectares of forest (about 74 football pitches): 4.3% of the forest it had in 2000. Most of it (93%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 53 haabout 74 football pitches
- Share of its forest
- 4.3%of what there was in 2000
- Cleared for good
- 49 hadeforestation: turned into farms, mines or towns
The worst year was 2006, when about 16 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 | 1 ha | under 1 ha | 2 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | 3 ha | under 1 ha | 3 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 1 ha | under 1 ha | 1 ha |
| 2006 | 16 ha | under 1 ha | 16 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 2 ha | under 1 ha | 2 ha |
| 2009 | 1 ha | under 1 ha | 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 2 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | 2 ha | under 1 ha | 3 ha |
| 2018 | 10 ha | under 1 ha | 10 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | 2 ha | 2 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Monrovia?
- Towns and roadscleared for good92% · 49 ha
- Storms, floods and other natural causescan grow back3% · 2 ha
- Unknown causescause unknown4.5% · 2 ha
Also: farms, pasture and plantations.
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
- 923 ha
- Forest in 2020
- 723 ha
- Overall change
- −200 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Monrovia shrank from about 923 hectares to 723 hectares, a net loss of about 200 hectares (−22%). New forest grew on about 41 hectares, but 242 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 Monrovia
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Monrovia with anywhere
This place
Monrovia
Use this data
Put Monrovia's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Monrovia
What is the air quality (AQI) in Monrovia right now?
The latest reading for Monrovia shows an AQI of 86 (Moderate), measured Nov 11, 16:00 local time by the Duport Road_Soko Sackor Compound (UMU-EPIC Liberia) ground monitoring station, 8.5 mi (13.6 km) away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Monrovia today?
At AQI 86 (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 Monrovia been like this week?
Over the last 7 days, the CAMS air-quality model put Monrovia's daily AQI at 47 on average, from 34 on Nov 5 to an hourly peak of 69 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Monrovia lost since 2001?
Since 2001, the area within 10 km of Monrovia has lost about 53 hectares of forest (about 74 football pitches): 4.3% of the forest it had in 2000. Most of it (93%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Monrovia shrank from about 923 hectares to 723 hectares, a net loss of about 200 hectares (−22%). New forest grew on about 41 hectares, but 242 hectares were lost.
What is the tree count in Monrovia?
Monrovia has an estimated 33,198 trees across the 2.0 sq mi (5.29 km²) of land measured — 25.1% tree cover, 5 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Monrovia need?
Monrovia needs roughly 6,481 more trees to close a 5-point shortfall against its 30% tree-cover target — about 142.6 t of extra CO₂ absorbed per year once grown.
How are Monrovia's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Capitol Hill, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 1.2 mi (2 km) radius around Capitol Hill; 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