City report · Antofagasta, Chile
Calama Air quality today
Air quality in Calama currently reads AQI 72 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 72
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 14.7
- tree cover
- 2.5%
- trees in this area
- 7.9K
- more trees needed
- 86.4K
Measured across a 2 km radius around Calama, Antofagasta, Chile (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Calama · AQI 72 (Moderate)
Calama's tree count comes to 7,854 trees across 12.57 km², 27 points below the 30% tree-cover level considered healthy for this area, so roughly 86,394 more trees would close the gap.
Air quality detail
Air quality in Calama today: AQI 72, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 22:00 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
14.7
PM10
72.9
NO₂
1.7
O₃
75.0
SO₂
3.8
CO
109.0
- 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 Calama's daily AQI at 60 on average, from 51 on Nov 10 to an hourly peak of 93 on Nov 6.
Where Calama stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Calama: Critically low
2.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
7,854
Target trees
94,248
More trees needed
86,394
CO₂ if planted / yr
1,901 t
Deforestation · 2001–2025
How much forest has Calama lost?
There was almost no forest around Calama 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 March 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 Calama
Same 2 km radius, same index — so they compare directly.
- Antofagasta200.9 km
Chile
- Tree cover
- 1%
- Air quality
- 55
- Iquique279.9 km
Chile
- Tree cover
- 0%
- Air quality
- 35
- San Salvador de Jujuy417.9 km
Argentina
- Tree cover
- 12%
- Air quality
- 85
- Salta442.3 km
Argentina
- Tree cover
- 7%
- Air quality
- 53
- Tarija444.4 km
Bolivia
- Tree cover
- 17%
- Air quality
- 18
- Potosí458.6 km
Bolivia
- Tree cover
- 0%
- Air quality
- 13
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Frequently asked
Questions about Calama
What is the air quality (AQI) in Calama right now?
The latest reading for Calama shows an AQI of 72 (Moderate), observed Nov 10, 22:00 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 Calama today?
At AQI 72 (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 Calama been like this week?
Over the last 7 days, the CAMS air-quality model put Calama's daily AQI at 60 on average, from 51 on Nov 10 to an hourly peak of 93 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Calama lost since 2001?
There was almost no forest around Calama 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 Calama?
Calama has an estimated 7,854 trees across the 12.57 km² measured — 2.5% tree cover, 27 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Calama need?
Calama needs roughly 86,394 more trees to close a 27-point shortfall against its 30% tree-cover target — about 1,901 t of extra CO₂ absorbed per year once grown.
How are Calama'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 Calama; the tree count is an estimate derived from that cover.
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