City report · Puerto Rico
Caguas Air quality today
Air quality in Caguas currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
AQI 33
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.0
- tree cover
- 29.0%
- trees in this area
- 91.1K
- more trees needed
- 3.1K
Measured across a 1.2 mi (2 km) radius around Caguas, Puerto Rico (4.9 sq mi), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Caguas · AQI 33 (Good)
Caguas's tree count comes to 91,106 trees across 4.9 sq mi (12.57 km²), 1 points below the 30% tree-cover level considered healthy for this area, so roughly 3,142 more trees would close the gap.
Air quality detail
Air quality in Caguas today: AQI 33, Good
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Cataño 40, 14.7 mi (23.7 km) away
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.0
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirNow
- 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 Caguas's daily AQI at 32 on average, from 12 on Nov 7 to an hourly peak of 61 on Nov 4.
Where Caguas stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Caguas: Below target
29.0% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
91,106
Target trees
94,248
More trees needed
3,142
CO₂ if planted / yr
69.1 t
Deforestation · 2001–2025
How much forest has Caguas lost?
Since 2001, the area within 10 km of Caguas has lost about 4,010 acres (1,620 hectares) of forest (about 3,000 football fields): 9% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for towns and roads.
2020: satellite photo from February 2020 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 4,010 acres (1,620 ha)about 3,000 football fields
- Share of its forest
- 9%of what there was in 2000
- Cleared for good
- 3,780 acres (1,530 ha)deforestation: turned into farms, mines or towns
Forest loss is slowing down: about 54 acres (22 hectares) a year in 2021–2025, down from 397 acres (161 hectares) a year in 2016–2020. The worst year was 2017, when about 1,830 acres (739 hectares) of forest were lost.
Acres of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 180 acres (73 ha) | under 1 ha | 181 acres (73 ha) |
| 2002 | 154 acres (63 ha) | under 1 ha | 155 acres (63 ha) |
| 2003 | 170 acres (69 ha) | under 1 ha | 170 acres (69 ha) |
| 2004 | 146 acres (59 ha) | 4 acres (2 ha) | 150 acres (61 ha) |
| 2005 | 246 acres (100 ha) | under 1 ha | 247 acres (100 ha) |
| 2006 | 145 acres (59 ha) | under 1 ha | 146 acres (59 ha) |
| 2007 | 150 acres (61 ha) | under 1 ha | 152 acres (62 ha) |
| 2008 | 140 acres (57 ha) | 5 acres (2 ha) | 145 acres (59 ha) |
| 2009 | 92 acres (37 ha) | 5 acres (2 ha) | 97 acres (39 ha) |
| 2010 | 34 acres (14 ha) | under 1 ha | 34 acres (14 ha) |
| 2011 | 75 acres (30 ha) | 3 acres (1 ha) | 78 acres (32 ha) |
| 2012 | 58 acres (23 ha) | under 1 ha | 58 acres (24 ha) |
| 2013 | 31 acres (13 ha) | under 1 ha | 31 acres (13 ha) |
| 2014 | 58 acres (23 ha) | under 1 ha | 60 acres (24 ha) |
| 2015 | 46 acres (19 ha) | under 1 ha | 46 acres (19 ha) |
| 2016 | 25 acres (10 ha) | under 1 ha | 26 acres (11 ha) |
| 2017 | 1,640 acres (665 ha) | 183 acres (74 ha) | 1,830 acres (739 ha) |
| 2018 | 32 acres (13 ha) | under 1 ha | 32 acres (13 ha) |
| 2019 | 61 acres (25 ha) | under 1 ha | 62 acres (25 ha) |
| 2020 | 34 acres (14 ha) | 5 acres (2 ha) | 40 acres (16 ha) |
| 2021 | 82 acres (33 ha) | under 1 ha | 83 acres (34 ha) |
| 2022 | 53 acres (21 ha) | 3 acres (1 ha) | 56 acres (23 ha) |
| 2023 | 68 acres (27 ha) | under 1 ha | 68 acres (28 ha) |
| 2024 | 14 acres (6 ha) | under 1 ha | 15 acres (6 ha) |
| 2025 | 45 acres (18 ha) | 3 acres (1 ha) | 48 acres (19 ha) |
What is causing deforestation around Caguas?
- Towns and roadscleared for good82% · 3,290 acres (1,330 ha)
- Farms, pasture and plantationscleared for good12% · 489 acres (198 ha)
- Shifting farmingcan grow back4.5% · 182 acres (74 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
- 50,000 acres (20,200 ha)
- Forest in 2020
- 49,400 acres (20,000 ha)
- Overall change
- −544 acres (220 ha)less forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Caguas stayed about the same size, at about 49,400 acres (20,000 hectares): new forest grew on about 798 acres (323 hectares), and about 1,340 acres (543 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 Caguas
What is the air quality (AQI) in Caguas right now?
The latest reading for Caguas shows an AQI of 33 (Good), measured Nov 11, 15:00 local time by the Cataño 40 ground monitoring station, 14.7 mi (23.7 km) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Caguas today?
At AQI 33 (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 Caguas been like this week?
Over the last 7 days, the CAMS air-quality model put Caguas's daily AQI at 32 on average, from 12 on Nov 7 to an hourly peak of 61 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 Caguas lost since 2001?
Since 2001, the area within 10 km of Caguas has lost about 4,010 acres (1,620 hectares) of forest (about 3,000 football fields): 9% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 54 acres (22 hectares) a year in 2021–2025, down from 397 acres (161 hectares) a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Caguas stayed about the same size, at about 49,400 acres (20,000 hectares): new forest grew on about 798 acres (323 hectares), and about 1,340 acres (543 hectares) were lost.
What is the tree count in Caguas?
Caguas has an estimated 91,106 trees across the 4.9 sq mi (12.57 km²) measured — 29.0% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Caguas need?
Caguas needs roughly 3,142 more trees to close a 1-point shortfall against its 30% tree-cover target — about 69.1 t of extra CO₂ absorbed per year once grown.
How are Caguas's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Caguas, 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 1.2 mi (2 km) radius around Caguas; the tree count is an estimate derived from that cover.
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