Bratislava
2 km around Old Town
Air quality now
AQI 73
40.8%
tree cover
Healthy tree cover
Europe · air quality report · 5 cities
Slovakia air quality today The AQI right now, city by city
Right now the 5 cities Airleaf measures in Slovakia average AQI 62 (moderate). The worst air is in Bratislava, at AQI 73, and the cleanest in Nitra, at AQI 48.
At ground stations alone, which measure rather than estimate, the average is AQI 62 across 4 cities. None of the 5 measured cities is over AQI 100 today, and 20% have Good air.
Average right now
AQI 62
Moderate
US EPA index, across 5 cities
- cities measured
- 5
- worst air: Bratislava
- 73
- cleanest air: Nitra
- 48
- average tree cover
- 32.0%
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Slovakia · average AQI 62
Air quality right now in all 5 cities in Slovakia
Moderate
Košice
2 km around Košice-Juh
Air quality now
AQI 65
20.2%
tree cover
30.8K more trees would reach 30% tree cover
Nitra
2 km around Nitra
Air quality now
AQI 48
35.1%
tree cover
Healthy tree cover
Prešov
2 km around 080 01 Prešov
Air quality now
AQI 65
33.9%
tree cover
Healthy tree cover
Žilina
2 km around Žilina
Air quality now
AQI 61
29.8%
tree cover
619 more trees would reach 30% tree cover
Across the country
How clean is the air across Slovakia today?
None of the 5 measured cities is over AQI 100 today, and 20% have Good air. Unusually sensitive people should consider limiting long outdoor exertion.
5 measured cities
- Good1 (20%)
- Moderate4 (80%)
Every measured city, including model estimates where no ground station is near.
Against everywhere else
How does Slovakia compare with other countries?
Right now the cities of Slovakia average cleaner air than 35% of the 171 countries Airleaf has enough cities to average, and more tree cover than 70%.
Cleaner air than…
- Slovakia
- Beats 35%
More tree cover than…
- Slovakia
- Beats 70%
See the most polluted and cleanest air rankings for every country.
Deforestation · 2001–2025
How much forest has Slovakia lost?
Since 2001, Slovakia has lost about 256,000 hectares of forest (about 2,600 km²): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 2,750 hectares (1.1%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 256,000 haabout 2,600 km²
- Share of its forest
- 11%of what there was in 2000
- Cleared for good
- 2,750 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 | 41 ha | 3,830 ha | 3,880 ha |
| 2002 | 43 ha | 3,880 ha | 3,920 ha |
| 2003 | 34 ha | 3,710 ha | 3,750 ha |
| 2004 | 59 ha | 4,470 ha | 4,530 ha |
| 2005 | 153 ha | 26,800 ha | 27,000 ha |
| 2006 | 105 ha | 7,850 ha | 7,960 ha |
| 2007 | 210 ha | 9,010 ha | 9,220 ha |
| 2008 | 286 ha | 12,900 ha | 13,200 ha |
| 2009 | 135 ha | 10,900 ha | 11,100 ha |
| 2010 | 180 ha | 16,400 ha | 16,600 ha |
| 2011 | 74 ha | 11,300 ha | 11,300 ha |
| 2012 | 90 ha | 8,930 ha | 9,020 ha |
| 2013 | 91 ha | 4,920 ha | 5,020 ha |
| 2014 | 149 ha | 17,000 ha | 17,100 ha |
| 2015 | 114 ha | 5,090 ha | 5,210 ha |
| 2016 | 163 ha | 16,400 ha | 16,600 ha |
| 2017 | 171 ha | 13,800 ha | 14,000 ha |
| 2018 | 127 ha | 17,200 ha | 17,300 ha |
| 2019 | 91 ha | 10,000 ha | 10,100 ha |
| 2020 | 118 ha | 11,400 ha | 11,500 ha |
| 2021 | 58 ha | 5,880 ha | 5,930 ha |
| 2022 | 56 ha | 5,070 ha | 5,130 ha |
| 2023 | 77 ha | 9,620 ha | 9,700 ha |
| 2024 | 51 ha | 7,460 ha | 7,510 ha |
| 2025 | 71 ha | 9,300 ha | 9,380 ha |
Forest loss is slowing down: about 7,530 hectares a year in 2021–2025, down from 13,900 hectares a year in 2016–2020. The worst year was 2005, when about 27,000 hectares of forest were lost.
What is causing deforestation in Slovakia?
- Loggingcan grow back98% · 250,000 ha
Also: towns and roads, storms, floods and other natural causes, farms, pasture and plantations, mining and energy, 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
Slovakia as a whole
40.3% of Slovakia 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
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Slovakia
Clean-air buying guides
Cleaner air at home in Slovakia
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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Good HEPA air purifiers under $200 at the makers' own prices, compared on verified clean air, room size and what the filters cost each year.
- 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 Slovakia: your questions answered
What is the air quality in Slovakia today?
Right now the 5 cities Airleaf measures in Slovakia average AQI 62 (moderate). The worst air is in Bratislava, at AQI 73, and the cleanest in Nitra, at AQI 48. At ground stations alone, which measure rather than estimate, the average is AQI 62 across 4 cities. None of the 5 measured cities is over AQI 100 today, and 20% have Good air.
Which city in Slovakia has the worst air right now?
Bratislava, at AQI 73 (Moderate) on the US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
Which city in Slovakia has the cleanest air right now?
Nitra, at AQI 48 (Good). Both lists rank current readings, from ground stations wherever Slovakia has at least three cities with one.
Is the air in Slovakia safe to breathe today?
It depends on the city. 1 city is Good, 4 cities are Moderate. At the national average of AQI 62: Unusually sensitive people should consider limiting long outdoor exertion.
How much forest has Slovakia lost since 2001?
About 256,000 ha from 2001 to 2025, 11% of the forest it had in 2000, from the University of Maryland's yearly satellite maps of forest loss. 2,750 ha of it was cleared for good, for farms, mines or towns.
How does Airleaf measure air quality in Slovakia?
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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