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Air quality now: AQI99Moderate, Porto Velho

City report · Rondônia, Brazil

Porto Velho Air quality today

Air quality in Porto Velho currently reads AQI 99 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.

AQI 99

Air quality right now

Moderate

Main pollutant: PM2.5
PM2.5, fine particles (µg/m³)
34.9
tree cover
19.8%
trees in this area
49.3K
more trees needed
25.4K

Measured across a 2 km radius around Caiari, Porto Velho - RO, Brazil (12.57 km²), from a satellite image of Nov 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.

Porto Velho · AQI 99 (Moderate)

Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Nov 8, 2026

Porto Velho's tree count comes to 49,327 trees across 9.97 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 25,411 more trees would close the gap.

Air quality detail

Air quality in Porto Velho today: AQI 99, Moderate

Main pollutant: PM2.5 · Observed Nov 11, 13:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.

Ground station · Porto Velho - Brux, 3.8 km away

Health signal

Unusually sensitive people should consider limiting long outdoor exertion.

PM2.5

34.9

PM10

—

NO₂

—

O₃

—

SO₂

—

CO

—

Data: OpenAQ · AirGradient, AIrWatch

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 Porto Velho's daily AQI at 65 on average, from 52 on Nov 9 to an hourly peak of 76 on Nov 4.

Last 7 days · model estimateavg 65 · peak 76
Nov 4: AQI 65 (peak 76)Nov 5: AQI 70 (peak 74)Nov 6: AQI 65 (peak 74)Nov 7: AQI 69 (peak 72)Nov 8: AQI 71 (peak 73)Nov 9: AQI 52 (peak 68)Nov 10: AQI 64 (peak 76)
Nov 4Nov 10

Where Porto Velho stands: the most polluted cities in the world right now · the cleanest

Tree cover detail

Tree cover in Porto Velho: Below target

19.8% tree cover against a 30% healthy-neighborhood target, across 9.97 km² of land.

10 points below target

Trees in this area

49,327

Target trees

74,738

More trees needed

25,411

CO₂ if planted / yr

559.0 t

Deforestation · 2001–2025

How much forest has Porto Velho lost?

Since 2001, the area within 10 km of Porto Velho has lost about 3,980 hectares of forest (about 5,600 football pitches): 28% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.

Satellite image of the area around Porto Velho, June 2017

2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km northwest of the city center.

Forest lost since 2001
3,980 haabout 5,600 football pitches
Share of its forest
28%of what there was in 2000
Cleared for good
3,470 hadeforestation: turned into farms, mines or towns

Forest loss is slowing down: about 135 hectares a year in 2021–2025, down from 190 hectares a year in 2016–2020. The worst year was 2010, when about 623 hectares of forest were lost.

Porto Velho's full deforestation report
Forest lost each year around Porto Velho, 2001–2025

Hectares of forest lost each year

Forest lost each year around Porto Velho, 2001–2025. Use the left and right arrow keys to read each year.623

Show the figures as a table
Forest lost each year around Porto Velho, 2001–2025
YearCleared for goodCan grow backTotal
200172 ha1 ha73 ha
200277 haunder 1 ha78 ha
200342 ha1 ha44 ha
200447 ha2 ha49 ha
2005128 ha2 ha130 ha
200665 ha6 ha71 ha
200790 ha7 ha97 ha
200835 ha2 ha37 ha
2009337 ha149 ha486 ha
2010544 ha79 ha623 ha
2011143 ha105 ha248 ha
201280 ha8 ha89 ha
201352 haunder 1 ha52 ha
2014122 ha10 ha132 ha
2015141 ha2 ha143 ha
2016156 ha1 ha157 ha
2017280 ha20 ha300 ha
2018127 ha9 ha136 ha
2019215 ha36 ha251 ha
2020101 ha5 ha106 ha
2021146 ha2 ha148 ha
202297 haunder 1 ha98 ha
202361 haunder 1 ha61 ha
202491 ha16 ha107 ha
2025216 ha46 ha262 ha

What is causing deforestation around Porto Velho?

  • Farms, pasture and plantationscleared for good73% · 2,900 ha
  • Towns and roadscleared for good11% · 418 ha
  • Storms, floods and other natural causescan grow back9.7% · 385 ha

Also: mining and energy, wildfires, shifting farming, 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
12,200 ha
Forest in 2020
11,000 ha
Overall change
−1,270 haless forest than in 2000

Comparing satellite maps from 2000 and 2020, the forest around Porto Velho shrank from about 12,200 hectares to 11,000 hectares, a net loss of about 1,270 hectares (−10%). New forest grew on about 801 hectares, but 2,070 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 Porto Velho

What is the air quality (AQI) in Porto Velho right now?

The latest reading for Porto Velho shows an AQI of 99 (Moderate), measured Nov 11, 13:00 local time by the Porto Velho - Brux ground monitoring station, 3.8 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.

Is it safe to exercise outside in Porto Velho today?

At AQI 99 (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 Porto Velho been like this week?

Over the last 7 days, the CAMS air-quality model put Porto Velho's daily AQI at 65 on average, from 52 on Nov 9 to an hourly peak of 76 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.

How much forest has the area around Porto Velho lost since 2001?

Since 2001, the area within 10 km of Porto Velho has lost about 3,980 hectares of forest (about 5,600 football pitches): 28% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 135 hectares a year in 2021–2025, down from 190 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Porto Velho shrank from about 12,200 hectares to 11,000 hectares, a net loss of about 1,270 hectares (−10%). New forest grew on about 801 hectares, but 2,070 hectares were lost.

What is the tree count in Porto Velho?

Porto Velho has an estimated 49,327 trees across the 9.97 km² of land measured — 19.8% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.

How many more trees does Porto Velho need?

Porto Velho needs roughly 25,411 more trees to close a 10-point shortfall against its 30% tree-cover target — about 559.0 t of extra CO₂ absorbed per year once grown.

How are Porto Velho's air quality and tree cover measured?

Air quality is measured by ground monitoring stations near Caiari, 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 Caiari; the tree count is an estimate derived from that cover.

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