Air quality in Palencia, Castile and León, Spain today

Mr. Duck’s Air Quality Score

Good air today for Palencia, Castile and León, Spain

⚠️ 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 Palencia today is classified as Good. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 6.0 and a PM10 reference value of 4.0, based on five valid observations recorded by OpenAQ.

Overall conditions meet the criteria for a Good rating according to the latest assessment. 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 Palencia air‑quality dataset contains seven rows of measurements from a single monitoring site, identified as PALENCIA 3. All seven standard pollutants are represented: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). Because the data come from only one station, spatial coverage across the city is limited; conditions can differ in other neighborhoods or at different times of day.

Freshness varies markedly between pollutants. The most recent CO reading dates back to 2024‑12‑19 13:00 UTC and the NO value was last updated on 2024‑01‑29 23:00 UTC, both classified as “old data.” In contrast, the latest updates for NO₂, O₃, PM₁₀, PM₂.₅ and SO₂ were recorded on 2026‑02‑09, with timestamps ranging from 03:00 to 15:00 UTC, and are flagged as having been updated within the past seven days. This mix of recent and older entries means that for half of the pollutants the most current information is only a few months old, while the other half reflects conditions from early 2024.

All reported values are identical across their minimum, median and maximum statistics, indicating no observed variability in this limited sample set. CO registers at 1 200 µg/m³, NO at 4 µg/m³, NO₂ at 9 µg/m³, O₃ at 65 µg/m³, PM₁₀ at 4 µg/m³, PM₂.₅ at 6 µg/m³ and SO₂ at 4 µg/m³. Because each pollutant shows a single static figure rather than a range, the dataset does not capture fluctuations that might occur throughout the day or across different locations in Palencia. Users should keep in mind that these point‑in‑time measurements represent only one monitoring location and may not fully describe the city’s overall air quality at any given moment.

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 current dataset for Palencia includes five valid measurements and is marked as Updated within 3 days, with the latest values recorded on 2026‑02‑09 at 15:00 UTC. These figures represent a snapshot of conditions across the city; air quality can differ by specific location and time of day, so individual experiences may vary from the reported averages.

OpenAQ station rows