Air quality in San Pedro, Costa Rica today

Mr. Duck’s Air Quality Score

Good air today for San Pedro, Costa Rica

⚠️ 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 San Pedro is assessed as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 4.79 µg/m³. This assessment is based on a single valid measurement reported through OpenAQ.

Overall conditions are within the range defined for the Good category, and no additional pollutants have been highlighted in the current data set. 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 monitoring row is present, and it reports a single pollutant: PM2.5 measured at 4.79 µg/m³. The reading comes from a sensor calibrated by NASA GSFC Rutgers (Calib. N13) and was last updated on 2026-02-10 17:51 UTC, which falls within the “updated within 3 days” freshness category.

With just one station contributing data, there is no variation in the reported values—the minimum, median, and maximum are all identical at 4.79 µg/m³, and both the 10th and 90th percentiles match this figure as well. Because the dataset contains a single recent entry, coverage across pollutants is limited to PM2.5 alone, and there are no older or unknown‑timestamp records to compare against. Consequently, while the available measurement is current, it represents only one point in space and time, so conditions elsewhere in San Pedro may differ from this snapshot.

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 for San Pedro is based on a single valid measurement and was refreshed recently, Updated within 3 days (last update: 2026‑02‑10T17:51:13+00:00). This snapshot reflects conditions at the time of that reading; air quality can vary across different neighborhoods and times of day within the city.

OpenAQ station rows