Air quality in Thessaloniki Municipal Unit, Macedonia and Thrace, Greece today

Mr. Duck’s Air Quality Score

Moderate air today for Thessaloniki Municipal Unit, Macedonia and Thrace, Greece

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Thessaloniki Municipal Unit today falls into the Moderate category. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 15.606166680653892 µg/m³, while the reference value for PM10 stands at 15.0 µg/m³ based on fifteen valid observations.

Data are displayed via OpenAQ and reflect the current assessment for this location. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The dataset for Thessaloniki Municipal Unit contains measurements from three monitoring stations, providing a total of 26 recent rows of data. All the standard air‑quality parameters are represented: carbon monoxide (CO), nitrogen oxides (NO and NO₂), ozone (O₃), sulfur dioxide (SO₂), particulate matter in three size fractions (PM1, PM2.5, PM10), as well as relative humidity and temperature, although the latter two are not listed among the numeric summaries. The most recent observations were recorded on 2026‑02‑10 at 20:00 UTC for CO, NO₂, O₃, SO₂ and PM10, and at 21:00 UTC the same day for PM2.5 and PM1. The only older entry is NO, last updated on 2024‑03‑11, which means that for most pollutants the data are fresh within the past few days.

Across the three stations the recorded ranges show considerable variation. PM10 values span from a low of 15 µg/m³ up to about 39 µg/m³, with a median near 26 µg/m³; PM2.5 varies between 5 and 20 µg/m³, centred around a median of roughly 10 µg/m³. CO concentrations range from 700 to 1 000 µg/m³, clustering around an 800 µg/m³ median, while NO₂ stays between 34 and 68 µg/m³ with a typical value close to 38 µg/m³. Ozone levels are modest, ranging from 7 to 30 µg/m³ and usually near 25 µg/m³; SO₂ is consistently low, recorded between 8 and 10 µg/m³. PM1 has a single reported value of about 7.5 µg/m³.

The coverage is uneven: three stations report the full suite of pollutants, but only one provides PM2.5 and PM1 data, and NO is only available from an older record. Consequently, while most key gases and coarse particles are captured with recent measurements, finer particulate data are limited to a single recent snapshot. Users should keep in mind that air‑quality conditions can differ across neighborhoods and over time, especially for pollutants with sparse or dated observations.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The data shown are based on 15 valid measurements and were refreshed recently, Updated within 3 days; the latest update was recorded at 2026-02-10T21:00:00+00:00. This snapshot reflects conditions measured across the Thessaloniki Municipal Unit but air quality can vary by location and time within the city, so values may differ from what you experience at a specific spot or moment.

OpenAQ station rows