City report · Mongala, Democratic Republic of the Congo
Bumba Air quality today
Air quality in Bumba currently reads AQI 60 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 60
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.6
- tree cover
- 47.3%
- trees in this area
- 132K
- more trees needed
- 0
Measured across a 2 km radius around Bumba, Democratic Republic of the Congo (12.57 km²), from a satellite image of Aug 13, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bumba · AQI 60 (Moderate)
Bumba's tree count comes to 132,103 trees across 11.17 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Bumba today: AQI 60, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 18:00 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
13.6
PM10
18.0
NO₂
0.6
O₃
33.0
SO₂
0.2
CO
296.0
- 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 Bumba's daily AQI at 41 on average, from 29 on Nov 8 to an hourly peak of 61 on Nov 10.
Where Bumba stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bumba: Healthy tree cover
47.3% tree cover against a 30% healthy-neighborhood target, across 11.17 km² of land.
Trees in this area
132,103
Target trees
132,103
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Bumba lost?
Since 2001, the area within 10 km of Bumba has lost about 11,200 hectares of forest (about 16,000 football pitches): 49% of the forest it had in 2000. Most of it was lost to shifting farming, so much of it can grow back. About 2,380 hectares (21%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 11,200 haabout 16,000 football pitches
- Share of its forest
- 49%of what there was in 2000
- Cleared for good
- 2,380 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 335 hectares a year in 2021–2025, down from 739 hectares a year in 2016–2020. The worst year was 2014, when about 1,320 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 | 82 ha | 108 ha | 189 ha |
| 2002 | 56 ha | 150 ha | 206 ha |
| 2003 | 40 ha | 118 ha | 158 ha |
| 2004 | 14 ha | 59 ha | 73 ha |
| 2005 | 28 ha | 90 ha | 118 ha |
| 2006 | 157 ha | 257 ha | 414 ha |
| 2007 | 416 ha | 448 ha | 864 ha |
| 2008 | 51 ha | 118 ha | 169 ha |
| 2009 | 61 ha | 169 ha | 230 ha |
| 2010 | 123 ha | 349 ha | 472 ha |
| 2011 | 27 ha | 61 ha | 88 ha |
| 2012 | 57 ha | 110 ha | 167 ha |
| 2013 | 146 ha | 483 ha | 629 ha |
| 2014 | 241 ha | 1,080 ha | 1,320 ha |
| 2015 | 125 ha | 587 ha | 712 ha |
| 2016 | 123 ha | 635 ha | 758 ha |
| 2017 | 227 ha | 967 ha | 1,190 ha |
| 2018 | 82 ha | 502 ha | 584 ha |
| 2019 | 67 ha | 474 ha | 541 ha |
| 2020 | 69 ha | 551 ha | 620 ha |
| 2021 | 41 ha | 263 ha | 304 ha |
| 2022 | 44 ha | 338 ha | 382 ha |
| 2023 | 43 ha | 343 ha | 386 ha |
| 2024 | 30 ha | 265 ha | 295 ha |
| 2025 | 34 ha | 274 ha | 308 ha |
What is causing deforestation around Bumba?
- Shifting farmingcan grow back78% · 8,730 ha
- Farms, pasture and plantationscleared for good13% · 1,480 ha
- Towns and roadscleared for good8.1% · 902 ha
Also: storms, floods and other natural causes, logging, 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
- 16,300 ha
- Forest in 2020
- 11,000 ha
- Overall change
- −5,260 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bumba shrank from about 16,300 hectares to 11,000 hectares, a net loss of about 5,260 hectares (−32%). New forest grew on about 378 hectares, but 5,640 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 Bumba
Same 2 km radius, same index — so they compare directly.
- Lisala105.8 km
Democratic Republic of the Congo
- Tree cover
- 67%
- Air quality
- 63
- Gemena322.2 km
Democratic Republic of the Congo
- Tree cover
- 58%
- Air quality
- 64
- Kisangani355.2 km
Democratic Republic of the Congo
- Tree cover
- 18%
- Air quality
- 40
- Bambari445.0 km
Central African Republic
- Tree cover
- 46%
- Air quality
- 73
- Impfondo494.0 km
Republic of the Congo
- Tree cover
- 65%
- Air quality
- 51
- Bangui497.1 km
Central African Republic
- Tree cover
- 26%
- Air quality
- 65
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Frequently asked
Questions about Bumba
What is the air quality (AQI) in Bumba right now?
The latest reading for Bumba shows an AQI of 60 (Moderate), observed Nov 10, 18:00 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 Bumba today?
At AQI 60 (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 Bumba been like this week?
Over the last 7 days, the CAMS air-quality model put Bumba's daily AQI at 41 on average, from 29 on Nov 8 to an hourly peak of 61 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Bumba lost since 2001?
Since 2001, the area within 10 km of Bumba has lost about 11,200 hectares of forest (about 16,000 football pitches): 49% of the forest it had in 2000. Most of it was lost to shifting farming, so much of it can grow back. About 2,380 hectares (21%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 335 hectares a year in 2021–2025, down from 739 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Bumba shrank from about 16,300 hectares to 11,000 hectares, a net loss of about 5,260 hectares (−32%). New forest grew on about 378 hectares, but 5,640 hectares were lost.
What is the tree count in Bumba?
Bumba has an estimated 132,103 trees across the 11.17 km² of land measured — 47.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bumba need?
Bumba has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Bumba'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 Bumba; the tree count is an estimate derived from that cover.
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