City report · Croatia
Osijek Air quality today
Air quality in Osijek currently reads AQI 77 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 77
Moderate
- PM2.5, fine particles (µg/m³)
- 23.0
- tree cover
- 17.4%
- trees in this area
- 52.0K
- more trees needed
- 37.7K
Measured across a 2 km radius around 31000, Novi Grad, Osijek, Croatia (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Osijek · AQI 77 (Moderate)
Osijek's tree count comes to 52,040 trees across 11.97 km² of land, 13 points below the 30% tree-cover level considered healthy for this area, so roughly 37,684 more trees would close the gap.
Air quality detail
Air quality in Osijek today: AQI 77, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 14:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · OSIJEK-2, Croatia, 3 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
23.0
PM10
28.1
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Croatian Environment Agency - Agencija za zaštitu okoliša
- 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 Osijek's daily AQI at 87 on average, from 59 on Nov 5 to an hourly peak of 153 on Nov 8.
Where Osijek stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Osijek: Critically low
17.4% tree cover against a 30% healthy-neighborhood target, across 11.97 km² of land.
Trees in this area
52,040
Target trees
89,724
More trees needed
37,684
CO₂ if planted / yr
829.0 t
Deforestation · 2001–2025
How much forest has Osijek lost?
Since 2001, the area within 10 km of Osijek has lost about 1,420 hectares of forest (about 2,000 football pitches): 24% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 21 hectares (1.5%) 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
- 1,420 haabout 2,000 football pitches
- Share of its forest
- 24%of what there was in 2000
- Cleared for good
- 21 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 71 hectares a year in 2021–2025, against 75 hectares a year in 2016–2020. The worst year was 2010, when about 125 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | under 1 ha | 12 ha | 13 ha |
| 2002 | 1 ha | 17 ha | 18 ha |
| 2003 | under 1 ha | 8 ha | 8 ha |
| 2004 | under 1 ha | 43 ha | 43 ha |
| 2005 | under 1 ha | 51 ha | 52 ha |
| 2006 | under 1 ha | 40 ha | 40 ha |
| 2007 | under 1 ha | 53 ha | 54 ha |
| 2008 | under 1 ha | 82 ha | 83 ha |
| 2009 | 3 ha | 68 ha | 71 ha |
| 2010 | under 1 ha | 125 ha | 125 ha |
| 2011 | under 1 ha | 59 ha | 60 ha |
| 2012 | 1 ha | 6 ha | 7 ha |
| 2013 | under 1 ha | 10 ha | 10 ha |
| 2014 | under 1 ha | 63 ha | 63 ha |
| 2015 | under 1 ha | 47 ha | 47 ha |
| 2016 | 3 ha | 89 ha | 91 ha |
| 2017 | under 1 ha | 36 ha | 36 ha |
| 2018 | 5 ha | 85 ha | 91 ha |
| 2019 | under 1 ha | 90 ha | 90 ha |
| 2020 | under 1 ha | 69 ha | 69 ha |
| 2021 | under 1 ha | 96 ha | 96 ha |
| 2022 | under 1 ha | 79 ha | 79 ha |
| 2023 | 2 ha | 80 ha | 83 ha |
| 2024 | under 1 ha | 48 ha | 48 ha |
| 2025 | under 1 ha | 50 ha | 50 ha |
What is causing deforestation around Osijek?
- Loggingcan grow back98% · 1,400 ha
Also: towns and roads, farms, pasture and plantations, storms, floods and other natural causes, 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
- 4,880 ha
- Forest in 2020
- 4,270 ha
- Overall change
- −609 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Osijek shrank from about 4,880 hectares to 4,270 hectares, a net loss of about 609 hectares (−12%). New forest grew on about 365 hectares, but 974 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
In the same region
Measured cities near Osijek
Same 2 km radius, same index — so they compare directly.
- Pécs68.7 km
Hungary
- Tree cover
- 43%
- Air quality
- 85
- Novi Sad95.2 km
Serbia
- Tree cover
- 21%
- Air quality
- 179
- Subotica97.0 km
Serbia
- Tree cover
- 25%
- Air quality
- 77
- Tuzla112.6 km
Bosnia and Herzegovina
- Tree cover
- 55%
- Air quality
- 152
- Szeged137.0 km
Hungary
- Tree cover
- 32%
- Air quality
- 68
- Banja Luka144.8 km
Bosnia and Herzegovina
- Tree cover
- 20%
- Air quality
- 195
Also compared:Osijek vs Zagreb
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Frequently asked
Questions about Osijek
What is the air quality (AQI) in Osijek right now?
The latest reading for Osijek shows an AQI of 77 (Moderate), measured Nov 11, 14:00 local time by the OSIJEK-2, Croatia ground monitoring station, 3 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 Osijek today?
At AQI 77 (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 Osijek been like this week?
Over the last 7 days, the CAMS air-quality model put Osijek's daily AQI at 87 on average, from 59 on Nov 5 to an hourly peak of 153 on Nov 8. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Osijek lost since 2001?
Since 2001, the area within 10 km of Osijek has lost about 1,420 hectares of forest (about 2,000 football pitches): 24% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 21 hectares (1.5%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 71 hectares a year in 2021–2025, against 75 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Osijek shrank from about 4,880 hectares to 4,270 hectares, a net loss of about 609 hectares (−12%). New forest grew on about 365 hectares, but 974 hectares were lost.
What is the tree count in Osijek?
Osijek has an estimated 52,040 trees across the 11.97 km² of land measured — 17.4% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Osijek need?
Osijek needs roughly 37,684 more trees to close a 13-point shortfall against its 30% tree-cover target — about 829.0 t of extra CO₂ absorbed per year once grown.
How are Osijek's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near 31000, 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 31000; the tree count is an estimate derived from that cover.
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