City report · Kujawsko-Pomorskie, Poland
Bydgoszcz Air quality today
Air quality in Bydgoszcz currently reads AQI 66 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 66
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 15.5
- tree cover
- 24.3%
- trees in this area
- 76.3K
- more trees needed
- 17.9K
Measured across a 2 km radius around Śródmieście, Bydgoszcz, Poland (12.57 km²), from a satellite image of Sep 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bydgoszcz · AQI 66 (Moderate)
Bydgoszcz's tree count comes to 76,341 trees across 12.57 km², 6 points below the 30% tree-cover level considered healthy for this area, so roughly 17,907 more trees would close the gap.
Air quality detail
Air quality in Bydgoszcz today: AQI 66, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 04:00 local time via Open-Meteo / CAMS, corrected with 13 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 13 station cities within 245 km, e.g. Toruń and Włocławek
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.5
PM10
23.8
NO₂
6.1
O₃
36.0
SO₂
3.1
CO
251.0
- 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 Bydgoszcz's daily AQI at 105 on average, from 62 on Nov 6 to an hourly peak of 182 on Nov 9.
Where Bydgoszcz stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bydgoszcz: Below target
24.3% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
76,341
Target trees
94,248
More trees needed
17,907
CO₂ if planted / yr
394.0 t
Deforestation · 2001–2025
How much forest has Bydgoszcz lost?
Since 2001, the area within 10 km of Bydgoszcz has lost about 3,220 hectares of forest (about 4,500 football pitches): 19% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 571 hectares (18%) 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 southeast of the city center.
- Forest lost since 2001
- 3,220 haabout 4,500 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 571 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 184 hectares a year in 2021–2025, against 175 hectares a year in 2016–2020. The worst year was 2024, when about 243 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 | 13 ha | 14 ha |
| 2002 | 4 ha | 35 ha | 39 ha |
| 2003 | 13 ha | 88 ha | 101 ha |
| 2004 | 8 ha | 69 ha | 77 ha |
| 2005 | 8 ha | 72 ha | 80 ha |
| 2006 | 48 ha | 60 ha | 108 ha |
| 2007 | 38 ha | 102 ha | 139 ha |
| 2008 | 40 ha | 47 ha | 87 ha |
| 2009 | 79 ha | 114 ha | 193 ha |
| 2010 | 26 ha | 56 ha | 82 ha |
| 2011 | 27 ha | 83 ha | 110 ha |
| 2012 | 21 ha | 98 ha | 119 ha |
| 2013 | 6 ha | 85 ha | 91 ha |
| 2014 | 8 ha | 94 ha | 102 ha |
| 2015 | 14 ha | 75 ha | 89 ha |
| 2016 | 21 ha | 126 ha | 147 ha |
| 2017 | 68 ha | 172 ha | 240 ha |
| 2018 | 23 ha | 108 ha | 131 ha |
| 2019 | 21 ha | 146 ha | 167 ha |
| 2020 | 34 ha | 154 ha | 188 ha |
| 2021 | 11 ha | 135 ha | 146 ha |
| 2022 | 9 ha | 143 ha | 152 ha |
| 2023 | 10 ha | 130 ha | 140 ha |
| 2024 | 7 ha | 236 ha | 243 ha |
| 2025 | 27 ha | 210 ha | 237 ha |
What is causing deforestation around Bydgoszcz?
- Loggingcan grow back82% · 2,630 ha
- Towns and roadscleared for good16% · 527 ha
- Mining and energycleared for good1.3% · 43 ha
Also: wildfires, 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
- 16,500 ha
- Forest in 2020
- 16,500 ha
- Overall change
- +54 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bydgoszcz stayed about the same size, at about 16,500 hectares: new forest grew on about 1,340 hectares, and about 1,290 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 Bydgoszcz
What is the air quality (AQI) in Bydgoszcz right now?
The latest reading for Bydgoszcz shows an AQI of 66 (Moderate), observed Nov 11, 04:00 local time via Open-Meteo / CAMS, corrected with 13 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Bydgoszcz today?
At AQI 66 (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 Bydgoszcz been like this week?
Over the last 7 days, the CAMS air-quality model put Bydgoszcz's daily AQI at 105 on average, from 62 on Nov 6 to an hourly peak of 182 on Nov 9. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Bydgoszcz lost since 2001?
Since 2001, the area within 10 km of Bydgoszcz has lost about 3,220 hectares of forest (about 4,500 football pitches): 19% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 571 hectares (18%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 184 hectares a year in 2021–2025, against 175 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Bydgoszcz stayed about the same size, at about 16,500 hectares: new forest grew on about 1,340 hectares, and about 1,290 hectares were lost.
What is the tree count in Bydgoszcz?
Bydgoszcz has an estimated 76,341 trees across the 12.57 km² measured — 24.3% tree cover, 6 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Bydgoszcz need?
Bydgoszcz needs roughly 17,907 more trees to close a 6-point shortfall against its 30% tree-cover target — about 394.0 t of extra CO₂ absorbed per year once grown.
How are Bydgoszcz'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 Śródmieście; the tree count is an estimate derived from that cover.
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