City report · İzmir Province, Turkey
Bornova Air quality today
Air quality in Bornova currently reads AQI 91 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 91
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 30.6
- tree cover
- 50.7%
- trees in this area
- 159K
- more trees needed
- 0
Measured across a 2 km radius around Erzene, Izmir, Turkiye (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bornova · AQI 91 (Moderate)
Bornova's tree count comes to 159,279 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Bornova today: AQI 91, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Izmir (Bornova), Turkey, 2 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
30.6
PM10
73.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Turkey National Air Quality Monitoring Network (Ulusal Hava Kalitesi İzleme Ağı)
- 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 Bornova's daily AQI at 52 on average, from 43 on Nov 8 to an hourly peak of 97 on Nov 9.
Where Bornova stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bornova: Healthy tree cover
50.7% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
159,279
Target trees
159,279
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Bornova lost?
Since 2001, the area within 10 km of Bornova has lost about 1,540 hectares of forest (about 2,200 football pitches): 21% of the forest it had in 2000. The biggest cause was wildfires (43%), after which forest can grow back. About 270 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 1,540 haabout 2,200 football pitches
- Share of its forest
- 21%of what there was in 2000
- Cleared for good
- 270 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 136 hectares a year in 2021–2025, up from 46 hectares a year in 2016–2020. The worst year was 2024, when about 405 hectares of forest were lost, mostly to wildfires.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 13 ha | 3 ha | 15 ha |
| 2002 | 5 ha | 1 ha | 7 ha |
| 2003 | 8 ha | 1 ha | 9 ha |
| 2004 | 8 ha | 3 ha | 11 ha |
| 2005 | 4 ha | 6 ha | 10 ha |
| 2006 | 8 ha | 30 ha | 38 ha |
| 2007 | 17 ha | 212 ha | 228 ha |
| 2008 | 13 ha | 43 ha | 56 ha |
| 2009 | 13 ha | 126 ha | 139 ha |
| 2010 | 4 ha | 6 ha | 10 ha |
| 2011 | 7 ha | 8 ha | 15 ha |
| 2012 | 2 ha | 15 ha | 17 ha |
| 2013 | 6 ha | 9 ha | 15 ha |
| 2014 | 24 ha | 17 ha | 41 ha |
| 2015 | 9 ha | 18 ha | 27 ha |
| 2016 | 9 ha | 41 ha | 50 ha |
| 2017 | 10 ha | 35 ha | 45 ha |
| 2018 | 11 ha | 48 ha | 59 ha |
| 2019 | 7 ha | 22 ha | 29 ha |
| 2020 | 8 ha | 39 ha | 48 ha |
| 2021 | 15 ha | 57 ha | 71 ha |
| 2022 | 5 ha | 4 ha | 10 ha |
| 2023 | 16 ha | 33 ha | 50 ha |
| 2024 | 3 ha | 402 ha | 405 ha |
| 2025 | 46 ha | 97 ha | 143 ha |
What is causing deforestation around Bornova?
- Wildfirescan grow back43% · 657 ha
- Loggingcan grow back39% · 606 ha
- Mining and energycleared for good10% · 154 ha
Also: towns and roads, farms, pasture and plantations, 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
- 11,600 ha
- Forest in 2020
- 11,400 ha
- Overall change
- −222 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bornova stayed about the same size, at about 11,400 hectares: new forest grew on about 294 hectares, and about 517 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 Bornova
What is the air quality (AQI) in Bornova right now?
The latest reading for Bornova shows an AQI of 91 (Moderate), measured Nov 11, 19:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Izmir (Bornova), Turkey, 2 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Bornova today?
At AQI 91 (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 Bornova been like this week?
Over the last 7 days, the CAMS air-quality model put Bornova's daily AQI at 52 on average, from 43 on Nov 8 to an hourly peak of 97 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 Bornova lost since 2001?
Since 2001, the area within 10 km of Bornova has lost about 1,540 hectares of forest (about 2,200 football pitches): 21% of the forest it had in 2000. The biggest cause was wildfires (43%), after which forest can grow back. About 270 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 136 hectares a year in 2021–2025, up from 46 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Bornova stayed about the same size, at about 11,400 hectares: new forest grew on about 294 hectares, and about 517 hectares were lost.
What is the tree count in Bornova?
Bornova has an estimated 159,279 trees across the 12.57 km² measured — 50.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bornova need?
Bornova has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Bornova's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Erzene, 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 Erzene; the tree count is an estimate derived from that cover.
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