Worst air pollution Thessaloníki, today and tomorrow

Today (18 July): Air quality in Thessaloníki is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 56.8/100).
Tomorrow (19 July 2026): Air quality in Thessaloníki is medium. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 47.1/100). Airmine updates local air quality forecasts four times daily.

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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Thessaloniki's air quality faces significant winter challenges, with residential wood burning in response to energy poverty combining with heavy traffic on the Thessaloniki ring road and port emissions from the busy harbour to elevate PM2.5 and NO₂. The Thermaikos Gulf provides ventilation on northwesterly winds, while the surrounding hills and the Axios valley can channel or concentrate emissions depending on wind direction.

Today - 18 July | Pollution peaks at 14:00

AQI:

Medium

56.8/100

PM2.5 (fine particles):

Good

11.8/100

PM10 (coarse particles):

Good

4.0/100

NO2 (nitrogen dioxide):

Medium

43.7/100

O3 (ozone):

Medium

56.8/100

SO2 (sulfur dioxide):

Good

7.7/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

11.0/100

PM1 (ultrafine particles):

Good

15.3/100

Levels show the poorest local air quality during the day

Tomorrow - 19 July | Pollution peaks at 14:00

AQI:

Medium

47.1/100

PM2.5 (fine particles):

Good

15.0/100

PM10 (coarse particles):

Good

4.1/100

NO2 (nitrogen dioxide):

Medium

47.0/100

O3 (ozone):

Medium

47.1/100

SO2 (sulfur dioxide):

Good

8.8/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

8.7/100

PM1 (ultrafine particles):

Good

20.0/100

Pollen forecast in Thessaloníki

View pollen forecast

Frequently Asked Questions

Is air quality bad in Thessaloníki right now?

On 18 July 2026, overall air quality in Thessaloníki is medium. AQI is the main air quality indicator at 56.8/100. Pollution peaks around 2:00 PM (O3: 56.8/100).

Will air quality be worse tomorrow in Thessaloníki?

On 19 July 2026, air quality conditions in Thessaloníki will be similar to today, with AQI forecast at medium at 47.1/100. Pollution peaks around 2:00 PM (O3: 47.1/100).

When is air pollution at its worst in Thessaloníki?

Reduced air quality in Thessaloníki is most likely when olive and cypress peaks pollen peaks, alongside periods of residential wood burning in response to energy poverty; things typically settle down again once the weather pattern shifts.

Are air quality levels in Thessaloníki 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.

Why doesn’t the forecast always reflect wildfire impacts?

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.

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Data provided by Airmine — Last update: 18 July 2026 at 21:30 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