Air quality in Arica, Arica y Parinacota Region, Chile today

Mr. Duck’s Air Quality Score

Moderate air today for Arica, Arica y Parinacota Region, Chile

⚠️ 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 Arica today falls into the Moderate category according to OpenAQ data. The primary pollutant identified is PM2.5, with a measured concentration of 22.0 µg/m³. Only one valid measurement was recorded for this assessment.

This information reflects the current monitoring snapshot and does not imply any trend or forecast. 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 current station data listed for this city is focused on particulate matter (PM). Only one pollutant, PM2.5, appears in the available rows and it comes from a single monitoring location in Arica. The dataset contains two raw records but just one distinct sensor reading, with the most recent value recorded at 2026-02-10 14:00 UTC. That timestamp is classified as “updated within 3 days,” indicating relatively fresh information for this pollutant.

Across the two entries the PM2.5 concentrations range from a low of 15.93 µg/m³ to a high of 22.0 µg/m³, with a median value of about 18.97 µg/m³ and the inter‑decile spread (10th to 90th percentile) running between roughly 16.54 and 21.39 µg/m³. Because only one station contributes data, coverage is limited to that specific site, so conditions elsewhere in Arica may differ from what these numbers show. The dataset also includes a single older record flagged as “old,” highlighting that most of the information is recent while a small portion remains dated.

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 reflects a single valid measurement and is marked as Updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 14:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so values may not represent every location or moment in Arica.

OpenAQ station rows