City report · Puno, Peru
Juliaca Air quality today
Air quality in Juliaca currently reads AQI 6 (Good): Air quality is satisfactory for everyone.
AQI 6
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 1.2
- tree cover
- 0.1%
- trees in this area
- 314
- more trees needed
- 93.9K
Measured across a 2 km radius around Cercado, Juliaca, Peru (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Juliaca · AQI 6 (Good)
Juliaca's tree count comes to 314 trees across 12.57 km², 30 points below the 30% tree-cover level considered healthy for this area, so roughly 93,934 more trees would close the gap.
Air quality detail
Air quality in Juliaca today: AQI 6, Good
Main pollutant: PM2.5 · Observed Nov 10, 23:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.2
PM10
2.0
NO₂
4.0
O₃
69.0
SO₂
1.5
CO
231.0
- 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 Juliaca's daily AQI at 13 on average, from 6 on Nov 9 to an hourly peak of 42 on Nov 4.
Where Juliaca stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Juliaca: Critically low
0.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
314
Target trees
94,248
More trees needed
93,934
CO₂ if planted / yr
2,067 t
Deforestation · 2001–2025
How much forest has Juliaca lost?
There was almost no forest around Juliaca 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 July 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 Juliaca
What is the air quality (AQI) in Juliaca right now?
The latest reading for Juliaca shows an AQI of 6 (Good), observed Nov 10, 23:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Juliaca today?
At AQI 6 (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 Juliaca been like this week?
Over the last 7 days, the CAMS air-quality model put Juliaca's daily AQI at 13 on average, from 6 on Nov 9 to an hourly peak of 42 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 Juliaca lost since 2001?
There was almost no forest around Juliaca 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 Juliaca?
Juliaca has an estimated 314 trees across the 12.57 km² measured — 0.1% tree cover, 30 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Juliaca need?
Juliaca needs roughly 93,934 more trees to close a 30-point shortfall against its 30% tree-cover target — about 2,067 t of extra CO₂ absorbed per year once grown.
How are Juliaca'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 Cercado; the tree count is an estimate derived from that cover.
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