City report · Croatia
Rijeka Air quality today
Air quality in Rijeka currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 14
Good
- PM2.5, fine particles (µg/m³)
- 2.6
- tree cover
- 44.1%
- trees in this area
- 79.1K
- more trees needed
- 0
Measured across a 2 km radius around Rijeka, Croatia (12.57 km²), from a satellite image of Sep 16, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Rijeka · AQI 14 (Good)
Rijeka's tree count comes to 79,109 trees across 7.18 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Rijeka today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 11, 13:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Rijeka-2, Croatia, 3.3 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.6
PM10
5.4
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Croatian Environment Agency - Agencija za zaštitu okoliša
- 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 Rijeka's daily AQI at 54 on average, from 35 on Nov 10 to an hourly peak of 89 on Nov 8.
Where Rijeka stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Rijeka: Healthy tree cover
44.1% tree cover against a 30% healthy-neighborhood target, across 7.18 km² of land.
Trees in this area
79,109
Target trees
79,109
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Rijeka lost?
Since 2001, the area within 10 km of Rijeka has lost about 177 hectares of forest (about 250 football pitches): 2.4% of the forest it had in 2000. Most of it (69%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 177 haabout 250 football pitches
- Share of its forest
- 2.4%of what there was in 2000
- Cleared for good
- 122 hadeforestation: turned into farms, mines or towns
The worst year was 2004, when about 32 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 | 4 ha | under 1 ha | 5 ha |
| 2002 | 2 ha | under 1 ha | 2 ha |
| 2003 | 4 ha | 13 ha | 17 ha |
| 2004 | 17 ha | 15 ha | 32 ha |
| 2005 | 6 ha | under 1 ha | 6 ha |
| 2006 | 10 ha | 11 ha | 21 ha |
| 2007 | 3 ha | 2 ha | 5 ha |
| 2008 | 6 ha | under 1 ha | 7 ha |
| 2009 | 6 ha | under 1 ha | 6 ha |
| 2010 | 4 ha | under 1 ha | 4 ha |
| 2011 | 3 ha | under 1 ha | 3 ha |
| 2012 | 8 ha | 2 ha | 10 ha |
| 2013 | 3 ha | 2 ha | 4 ha |
| 2014 | 6 ha | 1 ha | 7 ha |
| 2015 | 5 ha | under 1 ha | 5 ha |
| 2016 | 6 ha | under 1 ha | 6 ha |
| 2017 | 2 ha | under 1 ha | 3 ha |
| 2018 | 2 ha | under 1 ha | 2 ha |
| 2019 | 3 ha | under 1 ha | 4 ha |
| 2020 | 3 ha | under 1 ha | 4 ha |
| 2021 | 2 ha | under 1 ha | 3 ha |
| 2022 | 6 ha | 1 ha | 7 ha |
| 2023 | 5 ha | 4 ha | 9 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | 6 ha | under 1 ha | 7 ha |
What is causing deforestation around Rijeka?
- Towns and roadscleared for good64% · 113 ha
- Wildfirescan grow back17% · 30 ha
- Loggingcan grow back9.1% · 16 ha
Also: mining and energy, 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
- 8,600 ha
- Forest in 2020
- 8,440 ha
- Overall change
- −158 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Rijeka stayed about the same size, at about 8,440 hectares: new forest grew on about 35 hectares, and about 193 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 Rijeka
Same 2 km radius, same index — so they compare directly.
- Koper60.8 km
Slovenia
- Tree cover
- 17%
- Air quality
- 46
- Trieste63.1 km
Italy
- Tree cover
- 27%
- Air quality
- 46
- Novo Mesto77.6 km
Slovenia
- Tree cover
- 41%
- Air quality
- 41
- Ljubljana80.7 km
Slovenia
- Tree cover
- 38%
- Air quality
- 66
- Celje118.9 km
Slovenia
- Tree cover
- 44%
- Air quality
- 49
- Udine124.8 km
Italy
- Tree cover
- 24%
- Air quality
- 96
Also compared:Rijeka vs ZagrebRijeka vs Split
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Frequently asked
Questions about Rijeka
What is the air quality (AQI) in Rijeka right now?
The latest reading for Rijeka shows an AQI of 14 (Good), measured Nov 11, 13:00 local time by the Rijeka-2, Croatia ground monitoring station, 3.3 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Rijeka today?
At AQI 14 (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 Rijeka been like this week?
Over the last 7 days, the CAMS air-quality model put Rijeka's daily AQI at 54 on average, from 35 on Nov 10 to an hourly peak of 89 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Rijeka lost since 2001?
Since 2001, the area within 10 km of Rijeka has lost about 177 hectares of forest (about 250 football pitches): 2.4% of the forest it had in 2000. Most of it (69%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Rijeka stayed about the same size, at about 8,440 hectares: new forest grew on about 35 hectares, and about 193 hectares were lost.
What is the tree count in Rijeka?
Rijeka has an estimated 79,109 trees across the 7.18 km² of land measured — 44.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Rijeka need?
Rijeka has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Rijeka's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Rijeka, 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 Rijeka; the tree count is an estimate derived from that cover.
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