City report · Peru
Callao Air quality today
Air quality in Callao currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 62
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 15.0
- tree cover
- 2.9%
- trees in this area
- 7.7K
- more trees needed
- 71.5K
Measured across a 2 km radius around Santa Maria Norte, Callao, Peru (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Callao · AQI 62 (Moderate)
Callao's tree count comes to 7,653 trees across 10.56 km² of land, 27 points below the 30% tree-cover level considered healthy for this area, so roughly 71,515 more trees would close the gap.
Air quality detail
Air quality in Callao today: AQI 62, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 09:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · San Martin De Porres, Lima, Peru, 7.2 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.0
PM10
22.7
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, SENAMHI - Sistema de Gestión de Información de la Calidad del Aire en Peru
- 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 Callao's daily AQI at 55 on average, from 42 on Nov 4 to an hourly peak of 69 on Nov 9.
Where Callao stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Callao: Critically low
2.9% tree cover against a 30% healthy-neighborhood target, across 10.56 km² of land.
Trees in this area
7,653
Target trees
79,168
More trees needed
71,515
CO₂ if planted / yr
1,573 t
Deforestation · 2001–2025
How much forest has Callao lost?
There was almost no forest around Callao in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
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. Images: contains modified Copernicus Sentinel data. How it's measured
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Frequently asked
Questions about Callao
What is the air quality (AQI) in Callao right now?
The latest reading for Callao shows an AQI of 62 (Moderate), measured Nov 11, 09:00 local time by the San Martin De Porres, Lima, Peru ground monitoring station, 7.2 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 Callao today?
At AQI 62 (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 Callao been like this week?
Over the last 7 days, the CAMS air-quality model put Callao's daily AQI at 55 on average, from 42 on Nov 4 to an hourly peak of 69 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Callao lost since 2001?
There was almost no forest around Callao in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
What is the tree count in Callao?
Callao has an estimated 7,653 trees across the 10.56 km² of land measured — 2.9% tree cover, 27 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Callao need?
Callao needs roughly 71,515 more trees to close a 27-point shortfall against its 30% tree-cover target — about 1,573 t of extra CO₂ absorbed per year once grown.
How are Callao's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Santa Maria Norte, 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 Santa Maria Norte; the tree count is an estimate derived from that cover.
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