Worst air pollution Prague, today and tomorrow
Today (16 July): Air quality in Prague is fair. PM1 is fair; AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 43.8/100).
Tomorrow (17 July 2026): Air quality in Prague is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 51.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Prague's air quality faces seasonal challenges, with residential wood and coal burning combining with heavy traffic on the ring road to elevate PM2.5 significantly during winter. The Vltava river valley provides some ventilation, though the surrounding Bohemian hills create topographic variation in pollution exposure across the city and limit dispersal during anticyclonic winter conditions.
Today - 16 July | Pollution peaks at 16:00
AQI:
Medium
43.8/100
PM2.5 (fine particles):
Good
15.2/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
17.0/100
O3 (ozone):
Medium
43.8/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.3/100
PM1 (ultrafine particles):
Fair
20.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
51.3/100
PM2.5 (fine particles):
Good
18.3/100
PM10 (coarse particles):
Good
5.7/100
NO2 (nitrogen dioxide):
Fair
23.0/100
O3 (ozone):
Medium
51.3/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.1/100
PM1 (ultrafine particles):
Fair
23.6/100
Pollen forecast in Prague
View pollen forecastFrequently Asked Questions
Is air quality bad in Prague right now?
On 16 July 2026, overall air quality in Prague is fair. PM1 is the main pollutant at 20.4/100. Pollution peaks around 4:00 PM (O3: 43.8/100).
Will air quality be worse tomorrow in Prague?
On 17 July 2026, air quality conditions in Prague will be similar to today, with PM1 forecast at fair at 23.6/100. Pollution peaks around 12:00 PM (O3: 51.3/100).
When is air pollution at its worst in Prague?
In Prague, reduced air quality is most noticeable when birch and oak pollen peaks, and on days affected by residential wood and coal burning; background levels usually settle back down once the season changes.
Are air quality levels in Prague based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app