City report · Paraná, Brazil
Colombo Air quality today
Air quality in Colombo currently reads AQI 7 (Good): Air quality is satisfactory for everyone.
AQI 7
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 1.3
- tree cover
- 55.2%
- trees in this area
- 173K
- more trees needed
- 0
Measured across a 2 km radius around Centro, Colombo - PR, Brazil (12.57 km²), from a satellite image of Aug 1, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Colombo · AQI 7 (Good)
Colombo's tree count comes to 173,416 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 Colombo today: AQI 7, Good
Main pollutant: PM2.5 · Observed Nov 11, 04:00 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
1.3
PM10
1.6
NO₂
3.3
O₃
38.0
SO₂
1.3
CO
76.0
- 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 Colombo's daily AQI at 28 on average, from 10 on Nov 11 to an hourly peak of 73 on Nov 7.
Where Colombo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Colombo: Healthy tree cover
55.2% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
173,416
Target trees
173,416
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Colombo lost?
Since 2001, the area within 10 km of Colombo has lost about 4,270 hectares of forest (about 6,000 football pitches): 21% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,480 hectares (35%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from May 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 4,270 haabout 6,000 football pitches
- Share of its forest
- 21%of what there was in 2000
- Cleared for good
- 1,480 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 221 hectares a year in 2021–2025, down from 316 hectares a year in 2016–2020. The worst year was 2017, when about 365 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 | 28 ha | 21 ha | 49 ha |
| 2002 | 24 ha | 45 ha | 69 ha |
| 2003 | 61 ha | 38 ha | 99 ha |
| 2004 | 30 ha | 28 ha | 58 ha |
| 2005 | 54 ha | 48 ha | 102 ha |
| 2006 | 26 ha | 54 ha | 80 ha |
| 2007 | 26 ha | 23 ha | 49 ha |
| 2008 | 55 ha | 38 ha | 93 ha |
| 2009 | 32 ha | 27 ha | 58 ha |
| 2010 | 37 ha | 30 ha | 68 ha |
| 2011 | 56 ha | 44 ha | 100 ha |
| 2012 | 42 ha | 43 ha | 85 ha |
| 2013 | 63 ha | 129 ha | 192 ha |
| 2014 | 107 ha | 169 ha | 276 ha |
| 2015 | 80 ha | 122 ha | 202 ha |
| 2016 | 118 ha | 235 ha | 353 ha |
| 2017 | 109 ha | 256 ha | 365 ha |
| 2018 | 70 ha | 230 ha | 300 ha |
| 2019 | 61 ha | 222 ha | 283 ha |
| 2020 | 68 ha | 213 ha | 281 ha |
| 2021 | 78 ha | 233 ha | 311 ha |
| 2022 | 71 ha | 149 ha | 220 ha |
| 2023 | 76 ha | 141 ha | 217 ha |
| 2024 | 62 ha | 147 ha | 209 ha |
| 2025 | 47 ha | 102 ha | 149 ha |
What is causing deforestation around Colombo?
- Loggingcan grow back65% · 2,780 ha
- Farms, pasture and plantationscleared for good20% · 847 ha
- Towns and roadscleared for good15% · 636 ha
Also: 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
- 20,000 ha
- Forest in 2020
- 19,200 ha
- Overall change
- −840 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Colombo shrank from about 20,000 hectares to 19,200 hectares, a net loss of about 840 hectares (−4.2%). New forest grew on about 596 hectares, but 1,440 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 Colombo
Same 2 km radius, same index — so they compare directly.
- Curitiba15.9 km
Brazil
- Tree cover
- 14%
- Air quality
- 21
- Pinhais17.3 km
Brazil
- Tree cover
- 11%
- Air quality
- 32
- Piraquara23.0 km
Brazil
- Tree cover
- 48%
- Air quality
- 39
- São José dos Pinhais26.6 km
Brazil
- Tree cover
- 29%
- Air quality
- 11
- Campo Largo36.0 km
Brazil
- Tree cover
- 28%
- Air quality
- 36
- Araucária38.4 km
Brazil
- Tree cover
- 48%
- Air quality
- 33
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Frequently asked
Questions about Colombo
What is the air quality (AQI) in Colombo right now?
The latest reading for Colombo shows an AQI of 7 (Good), observed Nov 11, 04:00 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 Colombo today?
At AQI 7 (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 Colombo been like this week?
Over the last 7 days, the CAMS air-quality model put Colombo's daily AQI at 28 on average, from 10 on Nov 11 to an hourly peak of 73 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 Colombo lost since 2001?
Since 2001, the area within 10 km of Colombo has lost about 4,270 hectares of forest (about 6,000 football pitches): 21% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,480 hectares (35%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 221 hectares a year in 2021–2025, down from 316 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Colombo shrank from about 20,000 hectares to 19,200 hectares, a net loss of about 840 hectares (−4.2%). New forest grew on about 596 hectares, but 1,440 hectares were lost.
What is the tree count in Colombo?
Colombo has an estimated 173,416 trees across the 12.57 km² measured — 55.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Colombo need?
Colombo has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Colombo'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 Centro; the tree count is an estimate derived from that cover.
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