Air quality in Ate, Lima, Peru today

Mr. Duck’s Air Quality Score

Moderate air today for Ate, Lima, Peru

⚠️ 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 Ate, Lima, Peru is currently classified as Moderate. The primary pollutant measured is PM2.5. The latest PM2.5 reading is 20.48 µg/m³, and the PM10 level is 39.5 µg/m³. Eight valid measurements contributed to this assessment. The reported figures are expressed in micrograms per cubic meter, the standard unit for particulate matter concentrations. The Moderate classification indicates that pollutant concentrations are above the lowest tier but do not reach the highest tiers defined by the assessment framework.

Data is shown via OpenAQ. The data reflects the most recent sampling period for which eight valid observations were available. 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 Ate pulls information from 18 recent rows collected at three monitoring sites and includes measurements for six key pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5) and sulfur dioxide (SO₂). All entries except one were refreshed on 2026‑02‑10 16:00 UTC, so the bulk of the data reflects conditions within the last 30 days. The only older record is a CO reading expressed in ppm, dated 2017‑07‑20 06:00 UTC, which is retained for completeness but does not represent current levels.

Across the recent observations the measured values show a range of variability. CO in µg/m³ is tightly clustered, with a minimum of 2 654.2, a median of 2 682.4 and a maximum of 2 710.6, indicating little fluctuation among the three stations. NO₂ spans from 33.98 to 80.82 µg/m³ with a median of 65.05, while O₃ varies between 15.73 and 29.5 µg/m³ and centers around 24.07 µg/m³. Particulate matter displays broader relative spreads: PM10 ranges from 6.14 up to 85.2 µg/m³ (median 39.5) and PM2.5 from 4.85 to 40.84 µg/m³ (median 20.48). SO₂ shows a minimum of 4.88, a median of 12.92 and a peak of 30.81 µg/m³. These figures illustrate that while some pollutants such as CO are consistently measured, others like the particulates exhibit a wider distribution across the city.

Because the data come from only three stations, spatial differences in air quality can exist that are not captured here, and the single legacy CO ppm entry highlights that not all measurements are equally up‑to‑date. Users should keep in mind that the snapshot reflects conditions at the reporting sites during the most recent half‑month.

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

This report is based on eight valid measurements and was updated within 30 days. The most recent data were recorded on 2026-02-10 at 16:00 UTC. Air quality can vary by location and time within Ate, so this snapshot may not represent conditions everywhere in the city.

OpenAQ station rows