Smog in Czech Republic Today — Live Data: City AQI, PM2.5 & PM10, Weather Warnings and Forecast

Locations

Prague

9.1 PM2.5 µg/m³

Good

PM10 13 NO₂ 7.2 O₃ 51

Brno

9.8 PM2.5 µg/m³

Good

PM10 13 NO₂ 6.6 O₃ 50

Ostrava

11 PM2.5 µg/m³

Good

PM10 15 NO₂ 11 O₃ 47

Plzeň

12 PM2.5 µg/m³

Good

PM10 16 NO₂ 5.9 O₃ 47

Olomouc

11 PM2.5 µg/m³

Good

PM10 14 NO₂ 6.7 O₃ 49

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

PM2,5 11 (Good)

PM10 14 (Good)

O3 49 (Good)

NO2 8 (Good)

SO2 2 (Good)

CO 208 (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	10 Good	9 Good	8 Good	7 Good	5 Good	3 Good	7 Good	6 Good
PM10	13 Good	12 Good	12 Good	11 Good	8 Good	4 Good	9 Good	8 Good
O3	72 Moderate	64 Good	63 Good	63 Good	60 Good	69 Good	68 Good	65 Good
NO2	7 Good	8 Good	8 Good	7 Good	4 Good	3 Good	9 Good	6 Good
SO2	2 Good	2 Good	2 Good	1 Good	1 Good	0 Good	1 Good	1 Good
CO	203 Good	187 Good	186 Good	183 Good	167 Good	160 Good	183 Good	154 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Czech Republic from November 2016 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	2017-07	2017-06	2017-05	2017-04	2017-03	2017-02	2017-01	2016-12	2016-11
	8.3 Good	15 Moderate	12 Good	7 Good	24 Moderate	13 Good	14 Moderate	14 Moderate	7.6 Good	9.1 Good	10 Good	11 Good	8.9 Good	17 Moderate	8.6 Good	24 Moderate	9.7 Good	12 Good	27 Moderate	20 Moderate	14 Moderate	14 Moderate	14 Moderate	13 Good	16 Moderate	16 Moderate	24 Moderate	33 Moderate	19 Moderate	13 Good	16 Moderate	11 Good	15 Moderate	10 Good	9.5 Good	11 Good	14 Moderate	18 Moderate	11 Good	12 Good	26 Moderate	25 Moderate
PM10	11 Good	21 Moderate	16 Good	8.9 Good	27 Moderate	18 Good	18 Good	19 Good	13 Good	14 Good	16 Good	16 Good	13 Good	25 Moderate	13 Good	31 Moderate	11 Good	16 Good	33 Moderate	26 Moderate	19 Good	20 Moderate	19 Good	18 Good	22 Moderate	23 Moderate	28 Moderate	38 Moderate	23 Moderate	15 Good	20 Moderate	16 Good	20 Good	15 Good	13 Good	16 Good	16 Good	20 Moderate	12 Good	12 Good	32 Moderate	30 Moderate
NO2	8.9 Good	13 Good	12 Good	11 Good	20 Good	15 Good	15 Good	14 Good	11 Good	9.3 Good	8.6 Good	7.9 Good	11 Good	12 Good	12 Good	25 Good	16 Good	16 Good	19 Good	16 Good	16 Good	12 Good	10 Good	10 Good	11 Good	13 Good	19 Good	18 Good	15 Good	15 Good	18 Good	13 Good	14 Good	11 Good	10 Good	13 Good	11 Good	18 Good	17 Good	12 Good	25 Good	23 Good
O3	71 Moderate	79 Moderate	67 Good	63 Good	34 Good	42 Good	33 Good	40 Good	54 Good	68 Good	77 Moderate	89 Moderate	71 Moderate	81 Moderate	68 Good	50 Good	48 Good	38 Good	34 Good	54 Good	69 Good	85 Moderate	91 Moderate	80 Moderate	92 Moderate	76 Moderate	63 Good	51 Good	40 Good	44 Good	34 Good	43 Good	44 Good	70 Moderate	84 Moderate	74 Moderate	71 Moderate	60 Good	62 Good	65 Good	27 Good	30 Good

data source »

Quality of life in Czech Republic

Green and Parks in the City

Czech Republic 77%

Austria: 78% Slovakia: 58% Poland: 62% Germany: 78% Slovenia: 87%

Pleasure of spending time in the city

Czech Republic 77%

Austria: 84% Slovakia: 73% Poland: 48% Germany: 80% Slovenia: 88%

Air Pollution

Czech Republic 35%

Austria: 21% Slovakia: 35% Poland: 63% Germany: 25% Slovenia: 26%

Garbage Disposal

Czech Republic 74%

Austria: 84% Slovakia: 65% Poland: 60% Germany: 74% Slovenia: 87%

Availability and quality of drinking water

Czech Republic 84%

Austria: 91% Slovakia: 87% Poland: 65% Germany: 82% Slovenia: 96%

Cleanliness and tidiness

Czech Republic 65%

Austria: 82% Slovakia: 57% Poland: 58% Germany: 65% Slovenia: 87%

Noise and Light pollution

Czech Republic 44%

Austria: 34% Slovakia: 41% Poland: 51% Germany: 42% Slovenia: 37%

Water Pollution

Czech Republic 28%

Austria: 14% Slovakia: 27% Poland: 39% Germany: 23% Slovenia: 17%

Source: Numbeo

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

Frequently asked questions

Is the air safe to breathe in Czech Republic today?

The current average PM2.5 across Czech Republic is about 11 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Czech Republic?

Right now PM2.5 in Czech Republic averages about 11 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

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

Plzeň currently has the highest PM2.5 (12 µg/m³), while Prague has the cleanest air (9 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 — Czech Republic

The UV index in Czech Republic today is 4.5 (moderate) — unprotected fair skin can burn in about 45 minutes.

🌿 Pollen · Forecast — Czech Republic

Today the strongest pollen in Czech Republic is Ragweed (16 grains/m³, moderate concentration).

🌦️ Weather · 16-day Forecast — Czech Republic

16-day weather forecast for Czech Republic: today around 25°C (clear sky), lows near 11°C. Daily temperature and conditions, updated every day.