City report · Slovenia
Maribor Air quality today
Air quality in Maribor currently reads AQI 60 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 60
Moderate
- PM2.5, fine particles (µg/m³)
- 13.9
- tree cover
- 27.1%
- trees in this area
- 81.5K
- more trees needed
- 8.7K
Measured across a 2 km radius around Maribor, Slovenia (12.57 km²), from a satellite image of Sep 16, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Maribor · AQI 60 (Moderate)
Maribor's tree count comes to 81,476 trees across 12.03 km² of land, 3 points below the 30% tree-cover level considered healthy for this area, so roughly 8,719 more trees would close the gap.
Air quality detail
Air quality in Maribor today: AQI 60, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Maribor Vrbanski plato, 2.1 km away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.9
PM10
17.0
NO₂
28.9
O₃
—
SO₂
—
CO
—
Data: OpenAQ · EEA, Slovenian Environment Agency
- 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 Maribor's daily AQI at 82 on average, from 67 on Nov 10 to an hourly peak of 133 on Nov 6.
Where Maribor stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Maribor: Below target
27.1% tree cover against a 30% healthy-neighborhood target, across 12.03 km² of land.
Trees in this area
81,476
Target trees
90,195
More trees needed
8,719
CO₂ if planted / yr
191.8 t
Deforestation · 2001–2025
How much forest has Maribor lost?
Since 2001, the area within 10 km of Maribor has lost about 285 hectares of forest (about 400 football pitches): 2.2% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 83 hectares (29%) 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 southwest of the city center.
- Forest lost since 2001
- 285 haabout 400 football pitches
- Share of its forest
- 2.2%of what there was in 2000
- Cleared for good
- 83 hadeforestation: turned into farms, mines or towns
The worst year was 2005, when about 33 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 | 1 ha | 1 ha | 2 ha |
| 2002 | 2 ha | 5 ha | 7 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 3 ha | 20 ha | 23 ha |
| 2005 | 6 ha | 28 ha | 33 ha |
| 2006 | 7 ha | 13 ha | 20 ha |
| 2007 | 13 ha | 4 ha | 18 ha |
| 2008 | 2 ha | 5 ha | 8 ha |
| 2009 | 3 ha | 4 ha | 8 ha |
| 2010 | 1 ha | 4 ha | 6 ha |
| 2011 | 2 ha | 3 ha | 5 ha |
| 2012 | under 1 ha | 4 ha | 5 ha |
| 2013 | under 1 ha | 2 ha | 3 ha |
| 2014 | 7 ha | 5 ha | 12 ha |
| 2015 | under 1 ha | 3 ha | 3 ha |
| 2016 | 3 ha | 16 ha | 19 ha |
| 2017 | 4 ha | 12 ha | 16 ha |
| 2018 | 3 ha | 15 ha | 18 ha |
| 2019 | 7 ha | 4 ha | 11 ha |
| 2020 | 3 ha | 4 ha | 7 ha |
| 2021 | 7 ha | 5 ha | 12 ha |
| 2022 | 2 ha | 5 ha | 7 ha |
| 2023 | 2 ha | 18 ha | 21 ha |
| 2024 | 2 ha | 9 ha | 11 ha |
| 2025 | under 1 ha | 12 ha | 12 ha |
What is causing deforestation around Maribor?
- Loggingcan grow back62% · 176 ha
- Towns and roadscleared for good29% · 82 ha
- Storms, floods and other natural causescan grow back1.2% · 3 ha
Also: 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
- 14,000 ha
- Forest in 2020
- 14,000 ha
- Overall change
- +23 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Maribor stayed about the same size, at about 14,000 hectares: new forest grew on about 169 hectares, and about 146 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 Maribor
Same 2 km radius, same index — so they compare directly.
- Graz59.0 km
Austria
- Tree cover
- 28%
- Air quality
- 106
- Zagreb86.3 km
Croatia
- Tree cover
- 33%
- Air quality
- 117
- Novo Mesto91.3 km
Slovenia
- Tree cover
- 41%
- Air quality
- 54
- Klagenfurt am Wörthersee102.7 km
Austria
- Tree cover
- 26%
- Air quality
- 52
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Frequently asked
Questions about Maribor
What is the air quality (AQI) in Maribor right now?
The latest reading for Maribor shows an AQI of 60 (Moderate), measured Nov 11, 16:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Maribor Vrbanski plato, 2.1 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Maribor today?
At AQI 60 (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 Maribor been like this week?
Over the last 7 days, the CAMS air-quality model put Maribor's daily AQI at 82 on average, from 67 on Nov 10 to an hourly peak of 133 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 Maribor lost since 2001?
Since 2001, the area within 10 km of Maribor has lost about 285 hectares of forest (about 400 football pitches): 2.2% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 83 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Maribor stayed about the same size, at about 14,000 hectares: new forest grew on about 169 hectares, and about 146 hectares were lost.
What is the tree count in Maribor?
Maribor has an estimated 81,476 trees across the 12.03 km² of land measured — 27.1% tree cover, 3 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Maribor need?
Maribor needs roughly 8,719 more trees to close a 3-point shortfall against its 30% tree-cover target — about 191.8 t of extra CO₂ absorbed per year once grown.
How are Maribor's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Maribor, 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 Maribor; the tree count is an estimate derived from that cover.
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