City report · Kujawsko-Pomorskie, Poland
Włocławek Air quality today
Air quality in Włocławek currently reads AQI 99 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 99
Moderate
- PM2.5, fine particles (µg/m³)
- 35.1
- tree cover
- 37.8%
- trees in this area
- 112K
- more trees needed
- 0
Measured across a 2 km radius around Włocławek, Poland (12.57 km²), from a satellite image of Sep 16, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Włocławek · AQI 99 (Moderate)
Włocławek's tree count comes to 111,865 trees across 11.84 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Włocławek today: AQI 99, 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 · Włocławek, ul. Okrzei, 1.3 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
35.1
PM10
28.6
NO₂
13.7
O₃
35.8
SO₂
1.5
CO
354.0
Data: OpenAQ · EEA
- 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 Włocławek's daily AQI at 96 on average, from 62 on Nov 6 to an hourly peak of 152 on Nov 10.
Where Włocławek stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Włocławek: Healthy tree cover
37.8% tree cover against a 30% healthy-neighborhood target, across 11.84 km² of land.
Trees in this area
111,865
Target trees
111,865
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Włocławek lost?
Since 2001, the area within 10 km of Włocławek has lost about 2,470 hectares of forest (about 3,500 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 60 hectares (2.4%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 2,470 haabout 3,500 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 60 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 142 hectares a year in 2021–2025, against 134 hectares a year in 2016–2020. The worst year was 2020, when about 166 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 | 6 ha | 6 ha |
| 2002 | 4 ha | 84 ha | 89 ha |
| 2003 | 1 ha | 81 ha | 82 ha |
| 2004 | 3 ha | 42 ha | 45 ha |
| 2005 | 5 ha | 109 ha | 114 ha |
| 2006 | 2 ha | 91 ha | 93 ha |
| 2007 | under 1 ha | 51 ha | 51 ha |
| 2008 | 2 ha | 61 ha | 63 ha |
| 2009 | 4 ha | 64 ha | 67 ha |
| 2010 | 6 ha | 124 ha | 130 ha |
| 2011 | 1 ha | 49 ha | 50 ha |
| 2012 | 3 ha | 141 ha | 144 ha |
| 2013 | under 1 ha | 49 ha | 50 ha |
| 2014 | under 1 ha | 57 ha | 58 ha |
| 2015 | under 1 ha | 50 ha | 50 ha |
| 2016 | 4 ha | 93 ha | 97 ha |
| 2017 | 8 ha | 127 ha | 135 ha |
| 2018 | 3 ha | 128 ha | 131 ha |
| 2019 | 3 ha | 138 ha | 141 ha |
| 2020 | 3 ha | 163 ha | 166 ha |
| 2021 | 2 ha | 146 ha | 148 ha |
| 2022 | 2 ha | 155 ha | 156 ha |
| 2023 | 1 ha | 122 ha | 123 ha |
| 2024 | under 1 ha | 149 ha | 150 ha |
| 2025 | under 1 ha | 134 ha | 134 ha |
What is causing deforestation around Włocławek?
- Loggingcan grow back97% · 2,410 ha
- Towns and roadscleared for good2.4% · 59 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
- 12,800 ha
- Forest in 2020
- 13,000 ha
- Overall change
- +243 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Włocławek stayed about the same size, at about 13,000 hectares: new forest grew on about 1,100 hectares, and about 857 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 Włocławek
What is the air quality (AQI) in Włocławek right now?
The latest reading for Włocławek shows an AQI of 99 (Moderate), measured Nov 11, 16:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Włocławek, ul. Okrzei, 1.3 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Włocławek today?
At AQI 99 (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 Włocławek been like this week?
Over the last 7 days, the CAMS air-quality model put Włocławek's daily AQI at 96 on average, from 62 on Nov 6 to an hourly peak of 152 on Nov 10. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Włocławek lost since 2001?
Since 2001, the area within 10 km of Włocławek has lost about 2,470 hectares of forest (about 3,500 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 60 hectares (2.4%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 142 hectares a year in 2021–2025, against 134 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Włocławek stayed about the same size, at about 13,000 hectares: new forest grew on about 1,100 hectares, and about 857 hectares were lost.
What is the tree count in Włocławek?
Włocławek has an estimated 111,865 trees across the 11.84 km² of land measured — 37.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Włocławek need?
Włocławek has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Włocławek's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Włocławek, 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 Włocławek; the tree count is an estimate derived from that cover.
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