City report · Ceará, Brazil
Caucaia Air quality today
Air quality in Caucaia currently reads AQI 39 (Good): Air quality is satisfactory for everyone.
AQI 39
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.3
- tree cover
- 31.0%
- trees in this area
- 96.7K
- more trees needed
- 0
Measured across a 2 km radius around Centro, Caucaia - CE, Brazil (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Caucaia · AQI 39 (Good)
Caucaia's tree count comes to 96,708 trees across 12.48 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Caucaia today: AQI 39, Good
Main pollutant: PM2.5 · Observed Nov 11, 02:00 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
6.3
PM10
9.7
NO₂
3.9
O₃
34.0
SO₂
1.6
CO
138.0
- 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 Caucaia's daily AQI at 47 on average, from 44 on Nov 7 to an hourly peak of 54 on Nov 10.
Where Caucaia stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Caucaia: Healthy tree cover
31.0% tree cover against a 30% healthy-neighborhood target, across 12.48 km² of land.
Trees in this area
96,708
Target trees
96,708
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Caucaia lost?
Since 2001, the area within 10 km of Caucaia has lost about 1,390 hectares of forest (about 1,900 football pitches): 19% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from September 2017 of a 5 × 5 km area about 3 km east of the city center.
- Forest lost since 2001
- 1,390 haabout 1,900 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 1,360 hadeforestation: turned into farms, mines or towns
The worst year was 2013, when about 454 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 | 11 ha | under 1 ha | 11 ha |
| 2002 | 21 ha | under 1 ha | 21 ha |
| 2003 | 7 ha | under 1 ha | 7 ha |
| 2004 | 28 ha | under 1 ha | 28 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 19 ha | under 1 ha | 19 ha |
| 2007 | 33 ha | under 1 ha | 33 ha |
| 2008 | 32 ha | under 1 ha | 32 ha |
| 2009 | 5 ha | under 1 ha | 5 ha |
| 2010 | 35 ha | under 1 ha | 35 ha |
| 2011 | 41 ha | under 1 ha | 41 ha |
| 2012 | 84 ha | under 1 ha | 85 ha |
| 2013 | 446 ha | 8 ha | 454 ha |
| 2014 | 192 ha | 2 ha | 194 ha |
| 2015 | 26 ha | under 1 ha | 26 ha |
| 2016 | 70 ha | under 1 ha | 70 ha |
| 2017 | 97 ha | 8 ha | 105 ha |
| 2018 | 37 ha | under 1 ha | 37 ha |
| 2019 | 18 ha | 1 ha | 19 ha |
| 2020 | 6 ha | 2 ha | 9 ha |
| 2021 | 38 ha | under 1 ha | 38 ha |
| 2022 | 31 ha | under 1 ha | 31 ha |
| 2023 | 16 ha | under 1 ha | 16 ha |
| 2024 | 16 ha | under 1 ha | 16 ha |
| 2025 | 50 ha | 2 ha | 51 ha |
What is causing deforestation around Caucaia?
- Towns and roadscleared for good50% · 691 ha
- Farms, pasture and plantationscleared for good41% · 572 ha
- Mining and energycleared for good7.1% · 98 ha
Also: shifting farming, 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
- 1,610 ha
- Forest in 2020
- 1,600 ha
- Overall change
- −12 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Caucaia stayed about the same size, at about 1,600 hectares: new forest grew on about 116 hectares, and about 127 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
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Frequently asked
Questions about Caucaia
What is the air quality (AQI) in Caucaia right now?
The latest reading for Caucaia shows an AQI of 39 (Good), observed Nov 11, 02:00 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 Caucaia today?
At AQI 39 (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 Caucaia been like this week?
Over the last 7 days, the CAMS air-quality model put Caucaia's daily AQI at 47 on average, from 44 on Nov 7 to an hourly peak of 54 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 Caucaia lost since 2001?
Since 2001, the area within 10 km of Caucaia has lost about 1,390 hectares of forest (about 1,900 football pitches): 19% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Caucaia stayed about the same size, at about 1,600 hectares: new forest grew on about 116 hectares, and about 127 hectares were lost.
What is the tree count in Caucaia?
Caucaia has an estimated 96,708 trees across the 12.48 km² of land measured — 31.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Caucaia need?
Caucaia has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Caucaia'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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