Brno Moderate

Brno, South Moravian

Updated: Mar 13, 2026, 5:00 PM

Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Current Weather

15.1°C

Temperature

41%

Humidity

8.2

mph wind

Clear sky

Conditions

Pollutant Breakdown

PM2.5

µg/m³ · Fine particles

PM10

µg/m³ · Coarse particles

39.7

Ozone

ppb · Ground-level ozone

4.3

NO₂

ppb · Nitrogen dioxide

—

SO₂

ppb · Sulfur dioxide

—

ppm · Carbon monoxide

Dominant pollutant: PM25

Health Guidance

⚠️

Unusually sensitive people: Consider reducing prolonged outdoor exertion.

✅

General population: No restrictions for most people.

💨

Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: Czech Hydrometeorological Institute (Český hydrometeorologický ústav), World Air Quality Index Project

Is the air safe in Brno today?

The current Air Quality Index (AQI) in Brno is 55, which is classified as "Moderate". Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Brno, South Moravian is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50

Good

51–100

Moderate

101–150

Unhealthy for Sensitive Groups

151–200

Unhealthy

201–300

Very Unhealthy

301+

Hazardous