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

The latest data Last 7 days
Latest air quality data: Thessaloniki
Locations: Athens » Thessaloníki Pátrai » Irákleion » Larissa »
Pollution and air quality forecast for Thessaloníki. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Thessaloníki:
  1. particulate matter (PM2.5) dust - 15 (Moderate)
  2. particulate matter (PM10) suspended dust - 24 (Moderate)
  3. ozone (O3) - 34 (Good)
  4. nitrogen dioxide (NO2) - 36 (Good)
  5. sulfur dioxide (SO2) - 5 (Good)
  6. carbon monoxide (CO) - 219 (Good)
Real-time Air Quality Index (AQI) for Thessaloníki, Thursday, August 27, 2026: 2.

air quality index: 1
AQI 2 Moderate

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

Today (Thursday, August 27, 2026) air quality is moderate in Thessaloníki. Some pollutants in Thessaloníki may slightly affect very few hypersensitive individuals. Air pollutants in Thessaloníki may cause minor breathing discomfort to sensitive people.


What is the current level of PM2.5 in Thessaloníki? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 15 (Moderate) For comparison, the highest level of PM2.5 in Thessaloníki in the last 7 days was: 17 (Sunday, August 23, 2026) and the lowest: 11 (Wednesday, August 26, 2026).

What is the level of PM10 today in Thessaloníki? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Thessaloníki is: 24 (Moderate)

How is the O3 level today in Thessaloníki? (ozone (O3))
34 (Good)

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

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

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



Current data Thursday, August 27, 2026 at 4:00 AM

PM2,5 15 (Moderate)

PM10 24 (Moderate)

O3 34 (Good)

NO2 36 (Good)

SO2 5 (Good)

CO 219 (Good)

Data on air pollution from recent days in Thessaloníki

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 15
Moderate		 11
Good		 12
Good		 14
Moderate		 17
Moderate		 17
Moderate		 17
Moderate		 17
Moderate
pm10 23
Moderate		 19
Good		 18
Good		 20
Moderate		 23
Moderate		 23
Moderate		 26
Moderate		 24
Moderate
o3 79
Moderate		 71
Moderate		 73
Moderate		 86
Moderate		 89
Moderate		 85
Moderate		 87
Moderate		 86
Moderate
no2 18
Good		 20
Good		 17
Good		 16
Good		 17
Good		 20
Good		 19
Good		 18
Good
so2 4
Good		 3
Good		 2
Good		 2
Good		 3
Good		 4
Good		 3
Good		 3
Good
co 190
Good		 186
Good		 187
Good		 191
Good		 209
Good		 208
Good		 204
Good		 201
Good
data source »

Thessaloniki

Thursday, August 27, 2026 at 4:00 AM

PM2,5 15 (Moderate)

particulate matter (PM2.5) dust

PM10 24 (Moderate)

particulate matter (PM10) suspended dust

O3 34 (Good)

ozone (O3)

NO2 36 (Good)

nitrogen dioxide (NO2)

SO2 5.3 (Good)

sulfur dioxide (SO2)

CO 219 (Good)

carbon monoxide (CO)

Thessaloniki

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 17 17 17 17 14 12 11 15
pm10 24 26 23 23 20 18 19 23
o3 86 87 85 89 86 73 71 79
no2 18 19 20 17 16 17 20 18
so2 2.6 3.2 3.5 2.7 2.4 2.1 2.9 4.3
co 201 204 208 209 191 187 186 190

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

🌦️ Weather · 16-day Forecast — Thessaloniki

🌦️ WEATHER · 16-DAY FORECASTThessaloniki☀️32°Clear skyToday · ↑34° ↓26°💨 6 km/h · 💧 32%Tue25.08☀️34°26°Wed26.08☀️35°25°Thu27.08☀️36°27°Fri28.08☀️36°24°Sat29.08🌧️29°23°Sun30.08🌧️32°22°Mon31.08☀️31°23°Tue1.09🌤️33°22°Wed2.09☀️34°23°Thu3.09☀️35°23°Fri4.09☀️31°23°Sat5.09☀️29°21°Sun6.09☀️31°20°Mon7.09☀️34°21°Tue8.09🌧️29°22°Wed9.09☀️29°20°pollution-alert.com · August 27, 2026

16-day weather forecast for Thessaloniki: today around 34°C (clear sky), lows near 26°C. Daily temperature and conditions, updated every day. Strong wind (about 23 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Thessaloniki

☀️ UV INDEX · 16-DAY FORECASTThessaloniki03681111+7.2UV HIGHtoday, day maxSPF 30-50, hat and sunglasses are a must. Better tostay in the shade 11:00-15:00.⏱ Unprotected fair skin can burn in about 30 min7Wed26.087Thu27.087Fri28.087Sat29.087Sun30.087Mon31.087Tue1.097Wed2.097Thu3.097Fri4.097Sat5.097Sun6.097Mon7.097Tue8.097Wed9.097Thu10.090-2 low3-5 moderate6-7 high8-10 very high11+ extremepollution-alert.com · August 27, 2026

The UV index in Thessaloniki today is 7.2 (high) — unprotected fair skin can burn in about 30 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Thessaloniki — compare nearby locations.

Frequently asked questions

Is the air safe to breathe in Thessaloníki today?
The current average PM2.5 across Thessaloníki is about 15 µg/m³, rated “Moderate”. Air quality is good — outdoor activities are fine for everyone.
What is the current PM2.5 level in Thessaloníki?
Right now PM2.5 in Thessaloníki averages about 15 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.
Which day last week had the worst air in Thessaloníki?
Over the past week, the highest daily PM2.5 in Thessaloníki was recorded on Friday, August 21 (about 17 µg/m³).
What is the UV index in Thessaloníki today?
The UV index in Thessaloníki today is 7.2 (high) — unprotected fair skin can burn in about 30 minutes.
Does today's wind help disperse smog in Thessaloníki?
Strong wind (about 23 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.