Air quality in Municipal Unit of Patras, Peloponnese, Western Greece and the Ionian, Greece today

Mr. Duck’s Air Quality Score

Moderate air today for Municipal Unit of Patras, Peloponnese, Western Greece and the Ionian, 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 today in the Municipal Unit of Patras is classified as Moderate. The primary pollutant identified is PM2.5, with a reference concentration of 20.0 µg/m³. Measurements also include PM10, which has a reference value of 34.0 µg/m³, based on ten valid observations collected through OpenAQ.

These figures reflect the current monitoring snapshot for Patras and provide a basis for understanding ambient particulate levels. 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 Patras includes six measured pollutants – carbon monoxide (CO), nitrogen oxides (NO and NO₂), particulate matter of two size fractions (PM₁₀ and PM₂.₅) and sulphur dioxide (SO₂). Data come from four monitoring stations that together contribute 28 individual rows of observations. For five of the six pollutants the most recent readings were recorded on 2026-02-10 at 20:00 UTC, meaning they have been updated within the last three days. The exception is NO, whose latest entry dates back to 2024-03-11 at 12:00 UTC and is therefore classified as old data.

Across the recent measurements the observed values span a wide range. CO concentrations vary from 700 µg/m³ up to 1 300 µg/m³ with a median of 950 µg/m³, while NO₂ ranges between 1 µg/m³ and 50 µg/m³ (median 40 µg/m³). PM₁₀ values are modest, from 8 µg/m³ to 34 µg/m³ with a typical level around 17 µg/m³, and PM₂.₅ runs from 9 µg/m³ to 20 µg/m³ (median 12 µg/m³). SO₂ is the most stable, recorded at a single value of 8 µg/m³ across all recent rows. The older NO data show values between 8 µg/m³ and 34 µg/m³ with a median of 31 µg/m³.

The coverage is uneven: while CO, NO₂, PM₁₀, PM₂.₅ and SO₂ have fresh, recent observations from all four stations, NO relies on an older snapshot that may not reflect current conditions. Consequently, the overall picture for Patras combines a solid, up‑to‑date view of most pollutants with a notable gap in timely NO data, reminding users that air quality can differ across neighborhoods and over time.

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 ten valid measurements and were updated within 3 days, with the latest refresh recorded at 2026‑02‑10T20:00:00+00:00. This snapshot reflects conditions measured across monitoring sites in the Municipal Unit of Patras, but air quality can differ by specific location and time of day within the city, so values may not represent every neighbourhood or moment.

OpenAQ station rows