Brazil · Piauí · 2 cities
Air quality in Piauí today The AQI right now, city by city
Right now, Parnaíba has the cleanest air of the 2 cities we track in Piauí (AQI 43, Good), and Teresina the worst (AQI 63, Moderate). Parnaíba has the most tree cover, at 28.3% — #107 of 304 cities measured in Brazil.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
- cities tracked
- 2
- average tree cover
- 21.4%
- Brazil: 26.0%
- worst air now: Teresina
- 63
- cleanest air now: Parnaíba
- 43
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Piauí
Air quality today across Piauí, city by city
| Teresina | 63Moderate | 14.5% | 48.5K | #242 of 304 |
|---|---|---|---|---|
| Parnaíba | 43Good | 28.3% | 5.3K | #107 of 304 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in Brazil.
Deforestation · 2001–2025
How much forest has Piauí lost?
Since 2001, Piauí has lost about 1.79 million hectares of forest (about 18,000 km²): 15% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
- Forest lost since 2001
- 1.79 million haabout 18,000 km²
- Share of its forest
- 15%of what there was in 2000
- Cleared for good
- 1.22 million hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 20,300 ha | 4,120 ha | 24,500 ha |
| 2002 | 32,900 ha | 5,770 ha | 38,700 ha |
| 2003 | 29,500 ha | 4,600 ha | 34,100 ha |
| 2004 | 41,000 ha | 6,810 ha | 47,800 ha |
| 2005 | 29,600 ha | 4,800 ha | 34,400 ha |
| 2006 | 26,600 ha | 4,410 ha | 31,100 ha |
| 2007 | 39,600 ha | 10,800 ha | 50,400 ha |
| 2008 | 40,100 ha | 5,760 ha | 45,800 ha |
| 2009 | 48,500 ha | 6,130 ha | 54,600 ha |
| 2010 | 70,300 ha | 15,900 ha | 86,300 ha |
| 2011 | 55,200 ha | 13,600 ha | 68,800 ha |
| 2012 | 93,700 ha | 14,800 ha | 109,000 ha |
| 2013 | 58,200 ha | 17,200 ha | 75,400 ha |
| 2014 | 65,400 ha | 22,600 ha | 88,000 ha |
| 2015 | 38,100 ha | 21,200 ha | 59,300 ha |
| 2016 | 62,700 ha | 85,800 ha | 148,000 ha |
| 2017 | 53,200 ha | 23,200 ha | 76,500 ha |
| 2018 | 54,900 ha | 44,800 ha | 99,600 ha |
| 2019 | 44,600 ha | 19,700 ha | 64,300 ha |
| 2020 | 38,200 ha | 25,200 ha | 63,400 ha |
| 2021 | 44,100 ha | 29,300 ha | 73,400 ha |
| 2022 | 61,700 ha | 37,700 ha | 99,400 ha |
| 2023 | 76,300 ha | 67,600 ha | 144,000 ha |
| 2024 | 54,000 ha | 29,700 ha | 83,700 ha |
| 2025 | 42,100 ha | 52,500 ha | 94,600 ha |
Forest loss has stayed about the same: about 99,000 hectares a year in 2021–2025, against 90,400 hectares a year in 2016–2020. The worst year was 2016, when about 148,000 hectares of forest were lost, mostly to wildfires.
What is causing deforestation in Piauí?
- Farms, pasture and plantationscleared for good67% · 1.21 million ha
- Wildfirescan grow back28% · 508,000 ha
- Shifting farmingcan grow back1.2% · 22,100 ha
Also: logging, towns and roads, mining and energy, 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.
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. How it's measured
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