City report · Czechia
Prague Air quality today
Air quality in Prague currently reads AQI 72 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 72
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 20.4
- tree cover
- 26.1%
- trees in this area
- 75.8K
- more trees needed
- 11.3K
Measured across a 2 km radius around Josefov, 110 00 Prague 1, Czechia (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Prague · AQI 72 (Moderate)
Prague's tree count comes to 75,846 trees across 11.63 km² of land, 4 points below the 30% tree-cover level considered healthy for this area, so roughly 11,333 more trees would close the gap.
Air quality detail
Air quality in Prague today: AQI 72, 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 · Praha 2-Riegrovy sady, 1.7 km away · median of 12 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
20.4
PM10
22.8
NO₂
31.6
O₃
19.0
SO₂
—
CO
739.0
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 Prague's daily AQI at 88 on average, from 68 on Nov 4 to an hourly peak of 160 on Nov 8.
Where Prague stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Prague: Below target
26.1% tree cover against a 30% healthy-neighborhood target, across 11.63 km² of land.
Trees in this area
75,846
Target trees
87,179
More trees needed
11,333
CO₂ if planted / yr
249.3 t
Deforestation · 2001–2025
How much forest has Prague lost?
Since 2001, the area within 10 km of Prague has lost about 93 hectares of forest (about 130 football pitches): 1.8% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 32 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 93 haabout 130 football pitches
- Share of its forest
- 1.8%of what there was in 2000
- Cleared for good
- 32 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 11 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 | 2 ha | 2 ha |
| 2002 | under 1 ha | under 1 ha | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 1 ha | 5 ha | 6 ha |
| 2005 | 3 ha | 4 ha | 7 ha |
| 2006 | under 1 ha | 1 ha | 2 ha |
| 2007 | 2 ha | 2 ha | 4 ha |
| 2008 | 2 ha | 2 ha | 4 ha |
| 2009 | under 1 ha | 2 ha | 3 ha |
| 2010 | 6 ha | 5 ha | 11 ha |
| 2011 | 4 ha | 4 ha | 8 ha |
| 2012 | under 1 ha | 3 ha | 3 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 2 ha | 1 ha | 3 ha |
| 2017 | under 1 ha | 3 ha | 4 ha |
| 2018 | under 1 ha | 1 ha | 2 ha |
| 2019 | 2 ha | 3 ha | 5 ha |
| 2020 | 1 ha | 8 ha | 9 ha |
| 2021 | under 1 ha | 6 ha | 6 ha |
| 2022 | 1 ha | 2 ha | 3 ha |
| 2023 | under 1 ha | 2 ha | 2 ha |
| 2024 | under 1 ha | 2 ha | 3 ha |
| 2025 | under 1 ha | 1 ha | 2 ha |
What is causing deforestation around Prague?
- Loggingcan grow back51% · 47 ha
- Towns and roadscleared for good28% · 26 ha
- Farms, pasture and plantationscleared for good5.8% · 5 ha
Also: 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
- 11,200 ha
- Forest in 2020
- 12,000 ha
- Overall change
- +829 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Prague grew from about 11,200 hectares to 12,000 hectares, a net gain of about 829 hectares (+7.4%). New forest grew on about 923 hectares, while 94 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 Prague
Same 2 km radius, same index — so they compare directly.
- Dresden117.4 km
Germany
- Tree cover
- 33%
- Air quality
- 52
- Chemnitz134.4 km
Germany
- Tree cover
- 41%
- Air quality
- 15
- Wałbrzych152.3 km
Poland
- Tree cover
- 62%
- Air quality
- 47
- Legnica175.0 km
Poland
- Tree cover
- 38%
- Air quality
- 64
Also compared:Prague vs BrnoPrague vs Ostrava
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Frequently asked
Questions about Prague
What is the air quality (AQI) in Prague right now?
The latest reading for Prague shows an AQI of 72 (Moderate), measured Nov 11, 16:00 local time by 12 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Praha 2-Riegrovy sady, 1.7 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Prague today?
At AQI 72 (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 Prague been like this week?
Over the last 7 days, the CAMS air-quality model put Prague's daily AQI at 88 on average, from 68 on Nov 4 to an hourly peak of 160 on Nov 8. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Prague lost since 2001?
Since 2001, the area within 10 km of Prague has lost about 93 hectares of forest (about 130 football pitches): 1.8% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 32 hectares (34%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Prague grew from about 11,200 hectares to 12,000 hectares, a net gain of about 829 hectares (+7.4%). New forest grew on about 923 hectares, while 94 hectares were lost.
What is the tree count in Prague?
Prague has an estimated 75,846 trees across the 11.63 km² of land measured — 26.1% tree cover, 4 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Prague need?
Prague needs roughly 11,333 more trees to close a 4-point shortfall against its 30% tree-cover target — about 249.3 t of extra CO₂ absorbed per year once grown.
How are Prague's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Josefov, 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 Josefov; the tree count is an estimate derived from that cover.
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