City report · Antofagasta, Chile
Antofagasta Air quality today
Air quality in Antofagasta currently reads AQI 55 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 55
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.3
- tree cover
- 0.7%
- trees in this area
- 1.4K
- more trees needed
- 58.4K
Measured across a 2 km radius around Antofagasta, Chile (12.57 km²), from a satellite image of Sep 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Antofagasta · AQI 55 (Moderate)
Antofagasta's tree count comes to 1,394 trees across 7.97 km² of land, 29 points below the 30% tree-cover level considered healthy for this area, so roughly 58,359 more trees would close the gap.
Air quality detail
Air quality in Antofagasta today: AQI 55, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 06:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.3
PM10
15.7
NO₂
1.3
O₃
47.0
SO₂
2.0
CO
134.0
- 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 Antofagasta's daily AQI at 53 on average, from 45 on Nov 4 to an hourly peak of 61 on Nov 7.
Where Antofagasta stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Antofagasta: Critically low
0.7% tree cover against a 30% healthy-neighborhood target, across 7.97 km² of land.
Trees in this area
1,394
Target trees
59,753
More trees needed
58,359
CO₂ if planted / yr
1,284 t
Deforestation · 2001–2025
How much forest has Antofagasta lost?
There was almost no forest around Antofagasta 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
In the same region
Measured cities near Antofagasta
Same 2 km radius, same index — so they compare directly.
- Calama200.9 km
Chile
- Tree cover
- 3%
- Air quality
- 72
- Iquique383.1 km
Chile
- Tree cover
- 0%
- Air quality
- 35
- Copiapó413.3 km
Chile
- Tree cover
- 2%
- Air quality
- 56
- Salta520.8 km
Argentina
- Tree cover
- 7%
- Air quality
- 53
- San Salvador de Jujuy522.3 km
Argentina
- Tree cover
- 12%
- Air quality
- 112
Also compared:Antofagasta vs SantiagoAntofagasta vs Viña del MarAntofagasta vs Puerto Montt
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Frequently asked
Questions about Antofagasta
What is the air quality (AQI) in Antofagasta right now?
The latest reading for Antofagasta shows an AQI of 55 (Moderate), observed Nov 10, 06:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Antofagasta today?
At AQI 55 (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 Antofagasta been like this week?
Over the last 7 days, the CAMS air-quality model put Antofagasta's daily AQI at 53 on average, from 45 on Nov 4 to an hourly peak of 61 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Antofagasta lost since 2001?
There was almost no forest around Antofagasta 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 Antofagasta?
Antofagasta has an estimated 1,394 trees across the 7.97 km² of land measured — 0.7% tree cover, 29 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Antofagasta need?
Antofagasta needs roughly 58,359 more trees to close a 29-point shortfall against its 30% tree-cover target — about 1,284 t of extra CO₂ absorbed per year once grown.
How are Antofagasta'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 Antofagasta; the tree count is an estimate derived from that cover.
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