City report · Piauí, Brazil
Parnaíba Air quality today
Air quality in Parnaíba currently reads AQI 43 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 43
Good
- PM2.5, fine particles (µg/m³)
- 6.9
- tree cover
- 28.3%
- trees in this area
- 88.5K
- more trees needed
- 5.3K
Measured across a 2 km radius around Centro, Parnaíba - PI, Brazil (12.57 km²), from a satellite image of Nov 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Parnaíba · AQI 43 (Good)
Parnaíba's tree count comes to 88,463 trees across 12.51 km² of land, 2 points below the 30% tree-cover level considered healthy for this area, so roughly 5,314 more trees would close the gap.
Air quality detail
Air quality in Parnaíba today: AQI 43, Good
Main pollutant: PM2.5 · Observed Nov 11, 09:00 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
6.9
PM10
10.9
NO₂
0.6
O₃
50.0
SO₂
0.6
CO
139.0
- 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 Parnaíba's daily AQI at 48 on average, from 43 on Nov 9 to an hourly peak of 57 on Nov 5.
Where Parnaíba stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Parnaíba: Below target
28.3% tree cover against a 30% healthy-neighborhood target, across 12.51 km² of land.
Trees in this area
88,463
Target trees
93,777
More trees needed
5,314
CO₂ if planted / yr
116.9 t
Deforestation · 2001–2025
How much forest has Parnaíba lost?
Since 2001, the area within 10 km of Parnaíba has lost about 963 hectares of forest (about 1,300 football pitches): 20% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 963 haabout 1,300 football pitches
- Share of its forest
- 20%of what there was in 2000
- Cleared for good
- 954 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 161 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 | 40 ha | under 1 ha | 40 ha |
| 2002 | 21 ha | under 1 ha | 22 ha |
| 2003 | 30 ha | under 1 ha | 30 ha |
| 2004 | 47 ha | 1 ha | 49 ha |
| 2005 | 18 ha | under 1 ha | 19 ha |
| 2006 | 6 ha | under 1 ha | 6 ha |
| 2007 | 12 ha | under 1 ha | 12 ha |
| 2008 | 31 ha | under 1 ha | 31 ha |
| 2009 | 30 ha | under 1 ha | 30 ha |
| 2010 | 19 ha | 2 ha | 21 ha |
| 2011 | 10 ha | under 1 ha | 10 ha |
| 2012 | 159 ha | 2 ha | 161 ha |
| 2013 | 45 ha | under 1 ha | 45 ha |
| 2014 | 55 ha | under 1 ha | 55 ha |
| 2015 | 48 ha | under 1 ha | 48 ha |
| 2016 | 38 ha | under 1 ha | 38 ha |
| 2017 | 70 ha | under 1 ha | 71 ha |
| 2018 | 31 ha | under 1 ha | 31 ha |
| 2019 | 46 ha | under 1 ha | 46 ha |
| 2020 | 15 ha | under 1 ha | 15 ha |
| 2021 | 35 ha | under 1 ha | 35 ha |
| 2022 | 33 ha | under 1 ha | 33 ha |
| 2023 | 31 ha | under 1 ha | 31 ha |
| 2024 | 28 ha | under 1 ha | 28 ha |
| 2025 | 57 ha | under 1 ha | 57 ha |
What is causing deforestation around Parnaíba?
- Farms, pasture and plantationscleared for good60% · 579 ha
- Towns and roadscleared for good33% · 316 ha
- Mining and energycleared for good6.2% · 60 ha
Also: storms, floods and other natural causes, 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
- 1,710 ha
- Forest in 2020
- 1,370 ha
- Overall change
- −346 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Parnaíba shrank from about 1,710 hectares to 1,370 hectares, a net loss of about 346 hectares (−20%). New forest grew on about 110 hectares, but 456 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 Parnaíba
What is the air quality (AQI) in Parnaíba right now?
The latest reading for Parnaíba shows an AQI of 43 (Good), observed Nov 11, 09:00 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 Parnaíba today?
At AQI 43 (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 Parnaíba been like this week?
Over the last 7 days, the CAMS air-quality model put Parnaíba's daily AQI at 48 on average, from 43 on Nov 9 to an hourly peak of 57 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 Parnaíba lost since 2001?
Since 2001, the area within 10 km of Parnaíba has lost about 963 hectares of forest (about 1,300 football pitches): 20% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Parnaíba shrank from about 1,710 hectares to 1,370 hectares, a net loss of about 346 hectares (−20%). New forest grew on about 110 hectares, but 456 hectares were lost.
What is the tree count in Parnaíba?
Parnaíba has an estimated 88,463 trees across the 12.51 km² of land measured — 28.3% tree cover, 2 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Parnaíba need?
Parnaíba needs roughly 5,314 more trees to close a 2-point shortfall against its 30% tree-cover target — about 116.9 t of extra CO₂ absorbed per year once grown.
How are Parnaíba'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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