Prague
2 km around Josefov
Air quality now
AQI 66
26.1%
tree cover
11.3K more trees would reach 30% tree cover
Europe · air quality report · 5 cities
Czechia air quality today The AQI right now, city by city
Right now the 5 cities Airleaf measures in Czechia average AQI 64 (moderate). The worst air is in Ostrava, at AQI 84, and the cleanest in Liberec, at AQI 52.
At ground stations alone, which measure rather than estimate, the average is AQI 64 across 5 cities. None of the 5 measured cities is over AQI 100 today.
Average right now
AQI 64
Moderate
US EPA index, across 5 cities
- cities measured
- 5
- worst air: Ostrava
- 84
- cleanest air: Liberec
- 52
- average tree cover
- 33.2%
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Czechia · average AQI 64
Air quality right now in all 5 cities in Czechia
Moderate
Brno
2 km around Brno-střed
Air quality now
AQI 67
25.4%
tree cover
14.5K more trees would reach 30% tree cover
Ostrava
2 km around Moravská Ostrava a Přívoz
Air quality now
AQI 84
40.0%
tree cover
Healthy tree cover
Pilsen
2 km around Pilsen 3
Air quality now
AQI 53
28.2%
tree cover
5.6K more trees would reach 30% tree cover
Liberec
2 km around Liberec
Air quality now
AQI 52
46.5%
tree cover
Healthy tree cover
Across the country
How clean is the air across Czechia today?
None of the 5 measured cities is over AQI 100 today. Unusually sensitive people should consider limiting long outdoor exertion.
5 measured cities
- Moderate5 (100%)
Every measured city, including model estimates where no ground station is near.
Against everywhere else
How does Czechia compare with other countries?
Right now the cities of Czechia average cleaner air than 32% of the 171 countries Airleaf has enough cities to average, and more tree cover than 75%.
Cleaner air than…
- Czechia
- Beats 32%
More tree cover than…
- Czechia
- Beats 75%
See the most polluted and cleanest air rankings for every country.
Deforestation · 2001–2025
How much forest has Czechia lost?
Since 2001, Czechia has lost about 608,000 hectares of forest (about 6,100 km²): 20% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 3,890 hectares (under 1%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 608,000 haabout 6,100 km²
- Share of its forest
- 20%of what there was in 2000
- Cleared for good
- 3,890 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 56 ha | 3,360 ha | 3,410 ha |
| 2002 | 110 ha | 6,670 ha | 6,780 ha |
| 2003 | 53 ha | 3,840 ha | 3,890 ha |
| 2004 | 178 ha | 14,300 ha | 14,500 ha |
| 2005 | 242 ha | 25,200 ha | 25,400 ha |
| 2006 | 129 ha | 8,420 ha | 8,550 ha |
| 2007 | 183 ha | 21,500 ha | 21,700 ha |
| 2008 | 215 ha | 16,600 ha | 16,800 ha |
| 2009 | 230 ha | 13,300 ha | 13,600 ha |
| 2010 | 235 ha | 15,200 ha | 15,500 ha |
| 2011 | 235 ha | 21,800 ha | 22,000 ha |
| 2012 | 166 ha | 14,000 ha | 14,100 ha |
| 2013 | 77 ha | 7,540 ha | 7,620 ha |
| 2014 | 102 ha | 13,800 ha | 13,900 ha |
| 2015 | 84 ha | 7,930 ha | 8,010 ha |
| 2016 | 162 ha | 22,600 ha | 22,800 ha |
| 2017 | 187 ha | 26,100 ha | 26,300 ha |
| 2018 | 192 ha | 39,000 ha | 39,200 ha |
| 2019 | 206 ha | 72,900 ha | 73,100 ha |
| 2020 | 185 ha | 100,000 ha | 100,000 ha |
| 2021 | 161 ha | 56,000 ha | 56,100 ha |
| 2022 | 108 ha | 34,400 ha | 34,500 ha |
| 2023 | 134 ha | 24,200 ha | 24,300 ha |
| 2024 | 119 ha | 19,500 ha | 19,600 ha |
| 2025 | 144 ha | 16,000 ha | 16,200 ha |
Forest loss is slowing down: about 30,200 hectares a year in 2021–2025, down from 52,300 hectares a year in 2016–2020. The worst year was 2020, when about 100,000 hectares of forest were lost.
What is causing deforestation in Czechia?
- Loggingcan grow back99% · 600,000 ha
Also: storms, floods and other natural causes, towns and roads, mining and energy, farms, pasture and plantations, wildfires, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. How it's measured
Czechia as a whole
38.4% of Czechia was forested as of 2024, against a 30% benchmark. That already clears the benchmark — the city reports above show where cover is still thin locally. Source: World Bank (FAO).
Build your own
Compare Czechia with another country
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Czechia
Clean-air buying guides
Cleaner air at home in Czechia
Picked by tested clean-air delivery rate (CADR), noise and running cost, from independent test labels. No brand pays to be listed.
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- NIOSH-approved N95 masks for smoke and smog
NIOSH-approved N95 masks and P100 respirators for smog and smoke, and how to get the fit right. Cloth and surgical masks do little against PM2.5.
Frequently asked
Air quality in Czechia: your questions answered
What is the air quality in Czechia today?
Right now the 5 cities Airleaf measures in Czechia average AQI 64 (moderate). The worst air is in Ostrava, at AQI 84, and the cleanest in Liberec, at AQI 52. At ground stations alone, which measure rather than estimate, the average is AQI 64 across 5 cities. None of the 5 measured cities is over AQI 100 today.
Which city in Czechia has the worst air right now?
Ostrava, at AQI 84 (Moderate) on the US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
Which city in Czechia has the cleanest air right now?
Liberec, at AQI 52 (Moderate). Both lists rank current readings, from ground stations wherever Czechia has at least three cities with one.
Is the air in Czechia safe to breathe today?
It depends on the city. 5 cities are Moderate. At the national average of AQI 64: Unusually sensitive people should consider limiting long outdoor exertion.
How much forest has Czechia lost since 2001?
About 608,000 ha from 2001 to 2025, 20% of the forest it had in 2000, from the University of Maryland's yearly satellite maps of forest loss. 3,890 ha of it was cleared for good, for farms, mines or towns.
How does Airleaf measure air quality in Czechia?
Each city's reading is the US EPA air quality index, from ground monitoring stations where one has reported recently nearby, and from the CAMS atmospheric model elsewhere; each city's report says which. Tree cover is measured over the same 2 km radius in every city, so the cities compare like for like.
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