Air Pollution in Slovakia — Live AQI by City, PM2.5/PM10, Smog Alerts and Forecasts

1 weather warning in effect for Slovakia 🌡️ Extreme heat

Locations

Bratislava

6.6 PM2.5 µg/m³

Good

PM10 11 NO₂ 7.1 O₃ 55

Košice

7.8 PM2.5 µg/m³

Good

PM10 11 NO₂ 3.4 O₃ 52

Current data Thursday, August 27, 2026 at 3:00 AM

PM2,5 7 (Good)

PM10 11 (Good)

O3 54 (Good)

NO2 5 (Good)

SO2 2 (Good)

CO 165 (Good)

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
PM2,5	8 Good	8 Good	7 Good	6 Good	4 Good	4 Good	8 Good	8 Good
PM10	11 Good	11 Good	10 Good	9 Good	5 Good	6 Good	12 Good	12 Good
O3	74 Moderate	69 Good	72 Moderate	65 Good	62 Good	71 Moderate	72 Moderate	78 Moderate
NO2	5 Good	7 Good	6 Good	8 Good	5 Good	4 Good	10 Good	9 Good
SO2	2 Good	3 Good	3 Good	4 Good	2 Good	1 Good	4 Good	4 Good
CO	174 Good	169 Good	163 Good	164 Good	156 Good	173 Good	186 Good	204 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Slovakia from September 2017 to May 2020

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10	2018-09	2018-08	2018-07	2018-06	2018-05	2018-04	2018-03	2018-02	2018-01	2017-12	2017-11	2017-10	2017-09
	10 Good	14 Moderate	15 Moderate	11 Good	32 Moderate	18 Moderate	12 Good	15 Moderate	7.8 Good	9.9 Good	9.8 Good	11 Good	8.3 Good	16 Moderate	14 Moderate	20 Moderate	30 Moderate	25 Moderate	21 Moderate	17 Moderate	13 Good	13 Good	10 Good	10 Good	11 Good	14 Moderate	26 Moderate	26 Moderate	23 Moderate	20 Moderate	19 Moderate	15 Moderate	11 Good
PM10	12 Good	22 Moderate	20 Good	16 Good	37 Moderate	26 Moderate	18 Good	21 Moderate	15 Good	17 Good	17 Good	25 Moderate	12 Good	23 Moderate	20 Moderate	26 Moderate	35 Moderate	32 Moderate	27 Moderate	26 Moderate	22 Moderate	21 Moderate	17 Good	18 Good	20 Moderate	25 Moderate	33 Moderate	35 Moderate	27 Moderate	22 Moderate	26 Moderate	26 Moderate	20 Good
NO2	12 Good	14 Good	17 Good	18 Good	24 Good	21 Good	19 Good	21 Good	16 Good	14 Good	13 Good	13 Good	14 Good	15 Good	21 Good	26 Good	29 Good	27 Good	21 Good	21 Good	17 Good	15 Good	14 Good	14 Good	15 Good	18 Good	25 Good	24 Good	23 Good	27 Good	25 Good	23 Good	21 Good
O3	66 Good	74 Moderate	57 Good	47 Good	21 Good	30 Good	33 Good	45 Good	53 Good	67 Good	76 Moderate	73 Moderate	60 Good	77 Moderate	57 Good	43 Good	36 Good	26 Good	36 Good	49 Good	65 Good	73 Moderate	74 Moderate	73 Moderate	77 Moderate	76 Moderate	62 Good	52 Good	33 Good	28 Good	35 Good	39 Good	41 Good

data source »

Quality of life in Slovakia

Green and Parks in the City

Slovakia 58%

Hungary: 59% Czech Republic: 77% Poland: 62% Austria: 78% Slovenia: 87%

Pleasure of spending time in the city

Slovakia 73%

Hungary: 65% Czech Republic: 77% Poland: 48% Austria: 84% Slovenia: 88%

Air Pollution

Slovakia 35%

Hungary: 49% Czech Republic: 35% Poland: 63% Austria: 21% Slovenia: 26%

Garbage Disposal

Slovakia 65%

Hungary: 65% Czech Republic: 74% Poland: 60% Austria: 84% Slovenia: 87%

Availability and quality of drinking water

Slovakia 87%

Hungary: 80% Czech Republic: 84% Poland: 65% Austria: 91% Slovenia: 96%

Cleanliness and tidiness

Slovakia 57%

Hungary: 52% Czech Republic: 65% Poland: 58% Austria: 82% Slovenia: 87%

Noise and Light pollution

Slovakia 41%

Hungary: 45% Czech Republic: 44% Poland: 51% Austria: 34% Slovenia: 37%

Water Pollution

Slovakia 27%

Hungary: 30% Czech Republic: 28% Poland: 39% Austria: 14% Slovenia: 17%

Source: Numbeo

* Pollution data source: https://openaq.org (EEA Slovakia, EEA Czech Republic) The data is licensed under CC-By 4.0

Frequently asked questions

Is the air safe to breathe in Slovakia today?

The current average PM2.5 across Slovakia is about 7 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Slovakia?

Right now PM2.5 in Slovakia averages about 7 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which cities in Slovakia have the best and worst air quality now?

Košice currently has the highest PM2.5 (8 µg/m³), while Bratislava has the cleanest air (7 µg/m³).

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.

☀️ UV Index · 16-day Forecast — Slovakia

The UV index in Slovakia today is 5.2 (moderate) — unprotected fair skin can burn in about 40 minutes.

🌿 Pollen · Forecast — Slovakia

Today the strongest pollen in Slovakia is Ragweed (5 grains/m³, low concentration).

🌦️ Weather · 16-day Forecast — Slovakia

16-day weather forecast for Slovakia: today around 20°C (cloudy), lows near 10°C. Daily temperature and conditions, updated every day.