Bratislava: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

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Latest air quality data: Bratislava

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Pollution and air quality forecast for Bratislava. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Bratislava:

particulate matter (PM2.5) dust - 7 (Good)
particulate matter (PM10) suspended dust - 11 (Good)
ozone (O3) - 55 (Good)
nitrogen dioxide (NO2) - 7 (Good)
sulfur dioxide (SO2) - 3 (Good)
carbon monoxide (CO) - 159 (Good)

Real-time Air Quality Index (AQI) for Bratislava, Thursday, August 27, 2026: 1.

AQI 1 Good

What is the air quality in Bratislava today? Is the air polluted in Bratislava?. Is there smog?

Today (Thursday, August 27, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Bratislava.

What is the current level of PM2.5 in Bratislava? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 7 (Good) For comparison, the highest level of PM2.5 in Bratislava in the last 7 days was: 9 (Wednesday, August 26, 2026) and the lowest: 3 (Saturday, August 22, 2026). The highest PM2.5 values were recorded: 28 (January 2020). The lowest level of particulate matter PM2.5 pollution occurs in month: September (9).

What is the level of PM10 today in Bratislava? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Bratislava is: 11 (Good) The highest PM10 values usually occur in month: 36 (October 2018). The lowest value of particulate matter PM10 pollution in Bratislava is usually recorded in: February (14).

How is the O3 level today in Bratislava? (ozone (O3))
55 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
7 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
3 (Good)

How high is the CO level? (carbon monoxide (CO))
159 (Good)

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

PM2,5 7 (Good)

PM10 11 (Good)

O3 55 (Good)

NO2 7 (Good)

SO2 3 (Good)

CO 159 (Good)

Data on air pollution from recent days in Bratislava

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
pm25	7 Good	9 Good	7 Good	6 Good	4 Good	3 Good	7 Good	8 Good
pm10	11 Good	13 Good	10 Good	10 Good	5 Good	4 Good	11 Good	11 Good
o3	79 Moderate	73 Moderate	73 Moderate	61 Good	62 Good	73 Moderate	71 Moderate	79 Moderate
no2	7 Good	12 Good	9 Good	13 Good	8 Good	4 Good	13 Good	10 Good
so2	3 Good	6 Good	5 Good	7 Good	4 Good	2 Good	6 Good	5 Good
co	165 Good	175 Good	161 Good	162 Good	153 Good	152 Good	150 Good	166 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Bratislava 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
pm10	15 (Good)	24 (Moderate)	24 (Moderate)	14 (Good)	31 (Moderate)	24 (Moderate)	20 (Moderate)	27 (Moderate)	18 (Good)	19 (Good)	19 (Good)	28 (Moderate)	15 (Good)	28 (Moderate)	19 (Good)	25 (Moderate)	23 (Moderate)	24 (Moderate)	31 (Moderate)	36 (Moderate)	23 (Moderate)	23 (Moderate)	20 (Moderate)	21 (Moderate)	26 (Moderate)	26 (Moderate)	33 (Moderate)	32 (Moderate)	27 (Moderate)	17 (Good)	21 (Moderate)	22 (Moderate)	24 (Moderate)
pm25	12 (Good)	17 (Moderate)	16 (Moderate)	12 (Good)	28 (Moderate)	16 (Moderate)	16 (Moderate)	17 (Moderate)	9 (Good)	9.8 (Good)	9.5 (Good)	12 (Good)	9.3 (Good)	17 (Moderate)	11 (Good)	17 (Moderate)	20 (Moderate)	20 (Moderate)	23 (Moderate)	21 (Moderate)	13 (Good)	12 (Good)	11 (Good)	11 (Good)	12 (Good)	12 (Good)	28 (Moderate)	27 (Moderate)	24 (Moderate)	14 (Moderate)	15 (Moderate)	13 (Good)	14 (Moderate)
no2	13 (Good)	20 (Good)	22 (Good)	23 (Good)	31 (Good)	27 (Good)	25 (Good)	25 (Good)	20 (Good)	20 (Good)	18 (Good)	18 (Good)	20 (Good)	25 (Good)	27 (Good)	33 (Good)	31 (Good)	29 (Good)	30 (Good)	29 (Good)	30 (Good)	25 (Good)	20 (Good)	20 (Good)	23 (Good)	24 (Good)	31 (Good)	33 (Good)	29 (Good)	25 (Good)	31 (Good)	26 (Good)	28 (Good)
co	234 (Good)	291 (Good)	303 (Good)	287 (Good)	499 (Good)	394 (Good)	392 (Good)	421 (Good)	352 (Good)	329 (Good)	292 (Good)	326 (Good)	354 (Good)	385 (Good)	387 (Good)	476 (Good)	448 (Good)	490 (Good)	593 (Good)	416 (Good)	415 (Good)	272 (Good)	241 (Good)	314 (Good)	427 (Good)	493 (Good)	642 (Good)	652 (Good)	514 (Good)	343 (Good)	331 (Good)	193 (Good)	171 (Good)
o3	84 (Moderate)	89 (Moderate)	70 (Good)	58 (Good)	30 (Good)	37 (Good)	32 (Good)	51 (Good)	66 (Good)	85 (Moderate)	93 (Moderate)	93 (Moderate)	75 (Moderate)	83 (Moderate)	72 (Moderate)	58 (Good)	43 (Good)	33 (Good)	30 (Good)	60 (Good)	85 (Moderate)	100 (Moderate)	97 (Moderate)	89 (Moderate)	88 (Moderate)	80 (Moderate)	66 (Good)	56 (Good)	35 (Good)	37 (Good)	35 (Good)	51 (Good)	52 (Good)
so2	2.3 (Good)	7 (Good)	6.2 (Good)	4.5 (Good)	4.5 (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)

data source »

Quality of life in Bratislava

Green and Parks in the City

Bratislava 59%

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

particulate matter PM2.5

Bratislava 14 (Moderate)

Pleasure of spending time in the city

Bratislava 76%

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

particulate matter PM10

Bratislava 23 (Moderate)

Air Pollution

Bratislava 35%

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

Garbage Disposal

Bratislava 64%

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

Availability and quality of drinking water

Bratislava 86%

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

Cleanliness and tidiness

Bratislava 55%

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

Noise and Light pollution

Bratislava 45%

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

Water Pollution

Bratislava 28%

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

Source: Numbeo

Bratislava

Thursday, August 27, 2026 at 3:00 AM

PM2,5 6.6 (Good)

particulate matter (PM2.5) dust

PM10 11 (Good)

particulate matter (PM10) suspended dust

O3 55 (Good)

ozone (O3)

NO2 7.1 (Good)

nitrogen dioxide (NO2)

SO2 3.1 (Good)

sulfur dioxide (SO2)

CO 159 (Good)

carbon monoxide (CO)

Bratislava

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	7.8	7.5	2.9	4	6.3	6.8	9.1	7.5
pm10	11	11	4.2	5.5	9.8	10	13	11
o3	79	71	73	62	61	73	73	79
no2	10	13	4.1	7.5	13	8.9	12	6.5
so2	4.9	6.2	1.8	3.7	7.5	5.5	5.9	3.1
co	166	150	152	153	162	161	175	165

SK0002A

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
pm10	19	29	28	17	33	27	22	30	22	21	21	32	18	27	22	28	24	24	31	35	26	24	24	28	33	33	36	32	28	19	22	25	26
co	234	291	303	287	499	394	392	421	352	329	292	326	354	385	387	476	448	490	593	416	415	272	241	314	427	493	642	652	514	343	331	193	171
no2	22	32	34	35	44	39	34	36	31	32	32	31	34	41	44	53	44	38	41	44	48	43	38	38	42	41	44	50	38	33	43	39	43
pm25	12	17	17	11	26	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

SK0004A

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
pm25	16	21	18	16	36	-	18	20	12	13	12	15	10	19	12	18	21	22	24	24	16	14	13	14	14	14	29	27	27	16	17	14	14
pm10	13	22	23	13	31	24	20	27	18	20	20	28	14	29	18	24	22	24	31	39	25	27	21	19	23	23	32	31	28	16	22	23	24

SK0048A

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
pm25	9.6	14	14	8.8	23	16	13	15	6.4	7.1	7.3	9.7	8.2	15	10	17	18	18	22	18	9.7	8.8	8.8	8.4	10	11	27	27	21	12	13	12	13
pm10	13	20	21	12	28	21	18	23	14	15	17	24	13	27	16	23	22	24	31	34	19	18	17	16	21	23	33	32	27	15	20	19	23
no2	5.4	7.9	10	11	19	14	15	13	9	7.9	4.6	5.5	6.7	8.5	9.6	13	18	20	19	15	11	7.9	2.7	2.7	4.1	7.6	18	17	20	17	19	14	13
o3	84	89	70	58	30	37	32	51	66	85	93	93	75	83	72	58	43	33	30	60	85	100	97	89	88	80	66	56	35	37	35	51	52
so2	2.3	7	6.2	4.5	4.5	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

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

🌦️ Weather · 16-day Forecast — Bratislava

16-day weather forecast for Bratislava: today around 27°C (rain), lows near 17°C. Daily temperature and conditions, updated every day. Strong wind (about 26 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Bratislava

The UV index in Bratislava today is 5.8 (moderate) — unprotected fair skin can burn in about 35 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Bratislava — compare nearby locations.

ViennaAustria 8 µg/m³
GyőrHungary 6 µg/m³
Košice 8 µg/m³

Frequently asked questions

Is the air safe to breathe in Bratislava today?

The current average PM2.5 across Bratislava 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 Bratislava?

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

Which day last week had the worst air in Bratislava?

Over the past week, the highest daily PM2.5 in Bratislava was recorded on Wednesday, August 26 (about 9 µg/m³).

What is the UV index in Bratislava today?

The UV index in Bratislava today is 5.8 (moderate) — unprotected fair skin can burn in about 35 minutes.

Does today's wind help disperse smog in Bratislava?

Strong wind (about 26 km/h) is actively clearing smog and dust away.

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.