City report · São Paulo, Brazil
Caieiras Air quality today
Air quality in Caieiras currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 53
Moderate
- PM2.5, fine particles (µg/m³)
- 10.1
- tree cover
- 68.1%
- trees in this area
- 214K
- more trees needed
- 0
Measured across a 2 km radius around Cresciúma, Caieiras - SP, 07700-000, Brazil (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Caieiras · AQI 53 (Moderate)
Caieiras's tree count comes to 213,729 trees across 12.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Caieiras today: AQI 53, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 11:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Pico do Jaraguá, São Paulo, Brazil, 10.6 km away · median of 11 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.1
PM10
23.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, CETESB - Companhia Ambiental do Estado de São Paulo
- 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 Caieiras's daily AQI at 56 on average, from 36 on Nov 10 to an hourly peak of 118 on Nov 5.
Where Caieiras stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Caieiras: Healthy tree cover
68.1% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
213,729
Target trees
213,729
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Caieiras lost?
Since 2001, the area within 10 km of Caieiras has lost about 4,350 hectares of forest (about 6,100 football pitches): 24% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,600 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 4,350 haabout 6,100 football pitches
- Share of its forest
- 24%of what there was in 2000
- Cleared for good
- 1,600 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 157 hectares a year in 2021–2025, against 170 hectares a year in 2016–2020. The worst year was 2007, when about 327 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 | 118 ha | 121 ha | 239 ha |
| 2002 | 42 ha | 85 ha | 127 ha |
| 2003 | 48 ha | 161 ha | 209 ha |
| 2004 | 86 ha | 226 ha | 312 ha |
| 2005 | 45 ha | 61 ha | 106 ha |
| 2006 | 41 ha | 42 ha | 82 ha |
| 2007 | 152 ha | 175 ha | 327 ha |
| 2008 | 61 ha | 25 ha | 86 ha |
| 2009 | 47 ha | 69 ha | 116 ha |
| 2010 | 35 ha | 101 ha | 136 ha |
| 2011 | 50 ha | 63 ha | 112 ha |
| 2012 | 84 ha | 152 ha | 236 ha |
| 2013 | 32 ha | 224 ha | 256 ha |
| 2014 | 59 ha | 195 ha | 254 ha |
| 2015 | 21 ha | 100 ha | 121 ha |
| 2016 | 62 ha | 172 ha | 234 ha |
| 2017 | 108 ha | 117 ha | 225 ha |
| 2018 | 76 ha | 62 ha | 138 ha |
| 2019 | 86 ha | 58 ha | 143 ha |
| 2020 | 75 ha | 33 ha | 108 ha |
| 2021 | 43 ha | 97 ha | 140 ha |
| 2022 | 61 ha | 184 ha | 245 ha |
| 2023 | 79 ha | 137 ha | 216 ha |
| 2024 | 55 ha | 47 ha | 102 ha |
| 2025 | 39 ha | 43 ha | 82 ha |
What is causing deforestation around Caieiras?
- Loggingcan grow back62% · 2,690 ha
- Mining and energycleared for good15% · 670 ha
- Towns and roadscleared for good15% · 663 ha
Also: farms, pasture and plantations, shifting farming, wildfires, 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
- 19,700 ha
- Forest in 2020
- 19,100 ha
- Overall change
- −553 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Caieiras shrank from about 19,700 hectares to 19,100 hectares, a net loss of about 553 hectares (−2.8%). New forest grew on about 654 hectares, but 1,210 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 Caieiras
What is the air quality (AQI) in Caieiras right now?
The latest reading for Caieiras shows an AQI of 53 (Moderate), measured Nov 11, 11:00 local time by 11 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Pico do Jaraguá, São Paulo, Brazil, 10.6 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Caieiras 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 Caieiras been like this week?
Over the last 7 days, the CAMS air-quality model put Caieiras's daily AQI at 56 on average, from 36 on Nov 10 to an hourly peak of 118 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 Caieiras lost since 2001?
Since 2001, the area within 10 km of Caieiras has lost about 4,350 hectares of forest (about 6,100 football pitches): 24% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,600 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 157 hectares a year in 2021–2025, against 170 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Caieiras shrank from about 19,700 hectares to 19,100 hectares, a net loss of about 553 hectares (−2.8%). New forest grew on about 654 hectares, but 1,210 hectares were lost.
What is the tree count in Caieiras?
Caieiras has an estimated 213,729 trees across the 12.56 km² of land measured — 68.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Caieiras need?
Caieiras has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Caieiras's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Cresciúma, 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 2 km radius around Cresciúma; the tree count is an estimate derived from that cover.
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