City report · Santa Catarina, Brazil
Itajaí Air quality today
Air quality in Itajaí currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 53
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.9
- tree cover
- 15.4%
- trees in this area
- 41.1K
- more trees needed
- 39.0K
Measured across a 2 km radius around Centro, Itajaí - SC, Brazil (12.57 km²), from a satellite image of Nov 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Itajaí · AQI 53 (Moderate)
Itajaí's tree count comes to 41,123 trees across 10.68 km² of land, 15 points below the 30% tree-cover level considered healthy for this area, so roughly 38,987 more trees would close the gap.
Air quality detail
Air quality in Itajaí today: AQI 53, Moderate
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
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.9
PM10
16.5
NO₂
8.2
O₃
38.0
SO₂
1.6
CO
87.0
- 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 Itajaí's daily AQI at 42 on average, from 34 on Nov 6 to an hourly peak of 59 on Nov 5.
Where Itajaí stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Itajaí: Critically low
15.4% tree cover against a 30% healthy-neighborhood target, across 10.68 km² of land.
Trees in this area
41,123
Target trees
80,110
More trees needed
38,987
CO₂ if planted / yr
857.7 t
Deforestation · 2001–2025
How much forest has Itajaí lost?
Since 2001, the area within 10 km of Itajaí has lost about 1,040 hectares of forest (about 1,500 football pitches): 13% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 1,040 haabout 1,500 football pitches
- Share of its forest
- 13%of what there was in 2000
- Cleared for good
- 889 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 86 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 | 32 ha | 7 ha | 39 ha |
| 2002 | 17 ha | 9 ha | 25 ha |
| 2003 | 12 ha | 5 ha | 17 ha |
| 2004 | 71 ha | 3 ha | 75 ha |
| 2005 | 43 ha | 3 ha | 46 ha |
| 2006 | 72 ha | 6 ha | 78 ha |
| 2007 | 46 ha | 5 ha | 52 ha |
| 2008 | 69 ha | 5 ha | 74 ha |
| 2009 | 39 ha | 1 ha | 40 ha |
| 2010 | 80 ha | 6 ha | 86 ha |
| 2011 | 43 ha | 5 ha | 48 ha |
| 2012 | 27 ha | 3 ha | 30 ha |
| 2013 | 17 ha | under 1 ha | 18 ha |
| 2014 | 32 ha | 10 ha | 42 ha |
| 2015 | 19 ha | 10 ha | 28 ha |
| 2016 | 25 ha | 14 ha | 40 ha |
| 2017 | 39 ha | 10 ha | 49 ha |
| 2018 | 48 ha | 6 ha | 54 ha |
| 2019 | 11 ha | 3 ha | 14 ha |
| 2020 | 18 ha | 4 ha | 22 ha |
| 2021 | 21 ha | 2 ha | 23 ha |
| 2022 | 32 ha | 16 ha | 48 ha |
| 2023 | 22 ha | 7 ha | 29 ha |
| 2024 | 35 ha | 7 ha | 42 ha |
| 2025 | 19 ha | 5 ha | 24 ha |
What is causing deforestation around Itajaí?
- Towns and roadscleared for good65% · 682 ha
- Farms, pasture and plantationscleared for good16% · 168 ha
- Loggingcan grow back14% · 149 ha
Also: mining and energy, 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
- 7,280 ha
- Forest in 2020
- 6,800 ha
- Overall change
- −477 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Itajaí shrank from about 7,280 hectares to 6,800 hectares, a net loss of about 477 hectares (−6.6%). New forest grew on about 268 hectares, but 745 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 Itajaí
Same 2 km radius, same index — so they compare directly.
- Brusque32.6 km
Brazil
- Tree cover
- 47%
- Air quality
- 45
- Blumenau40.1 km
Brazil
- Tree cover
- 62%
- Air quality
- 38
- Jaraguá do Sul61.8 km
Brazil
- Tree cover
- 45%
- Air quality
- 22
- Joinville69.5 km
Brazil
- Tree cover
- 32%
- Air quality
- 49
- Florianópolis77.4 km
Brazil
- Tree cover
- 29%
- Air quality
- 53
- São José78.7 km
Brazil
- Tree cover
- 25%
- Air quality
- 39
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Frequently asked
Questions about Itajaí
What is the air quality (AQI) in Itajaí right now?
The latest reading for Itajaí shows an AQI of 53 (Moderate), observed Nov 11, 02:00 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 Itajaí today?
At AQI 53 (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 Itajaí been like this week?
Over the last 7 days, the CAMS air-quality model put Itajaí's daily AQI at 42 on average, from 34 on Nov 6 to an hourly peak of 59 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 Itajaí lost since 2001?
Since 2001, the area within 10 km of Itajaí has lost about 1,040 hectares of forest (about 1,500 football pitches): 13% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Itajaí shrank from about 7,280 hectares to 6,800 hectares, a net loss of about 477 hectares (−6.6%). New forest grew on about 268 hectares, but 745 hectares were lost.
What is the tree count in Itajaí?
Itajaí has an estimated 41,123 trees across the 10.68 km² of land measured — 15.4% tree cover, 15 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Itajaí need?
Itajaí needs roughly 38,987 more trees to close a 15-point shortfall against its 30% tree-cover target — about 857.7 t of extra CO₂ absorbed per year once grown.
How are Itajaí'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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