Air quality in Nezahualcóyotl, State of Mexico, Mexico today

Mr. Duck’s Air Quality Score

Moderate air today for Nezahualcóyotl, State of Mexico, Mexico

⚠️ 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 Nezahualcóyotl today is classified as Moderate. The primary pollutant measured is PM2.5. The reference value for PM2.5 is 21.0 µg/m³ and for PM10 it is 33.0 µg/m³. These figures are derived from eight valid measurements collected for the current reporting period. The snapshot reflects the latest available data for the city.

Data is shown via OpenAQ, which aggregates the reported values. The reported concentrations align with the reference values used in the 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 Nezahualcóyotl air‑quality record draws on two monitoring stations that together provide 18 rows of recent observations for eight pollutants: carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO₂), nitrogen oxides (NOX), ozone (O₃), fine particulate matter (PM₂.₅), coarse particulate matter (PM₁₀) and sulfur dioxide (SO₂). All entries are marked as “Updated within 30 days,” with the most recent timestamps dated 2026‑02‑10 22:00 UTC for O₃, PM₂.₅ and PM₁₀, while CO, NO, NO₂, NOX and SO₂ were last refreshed on 2026‑02‑03 (between 16:00 and 17:00 UTC). This means the dataset includes measurements from the past ten days, but several key gases have not been refreshed for more than two weeks.

The data show a wide spread for some compounds. CO values range from 0.3 ppm up to 2.0 ppm, with a median of 0.4 ppm, indicating most recent readings sit near the lower end of the observed interval. PM₂.5 spans 3 µg/m³ to 21 µg/m³, with a median of 6 µg/m³, revealing notable variability in particulate concentrations. In contrast, NO (0.069 ppm), NOX (0.131 ppm) and PM₁₀ (33 µg/m³) each appear only once in the record, so no range or median can be derived for those pollutants. NO₂ varies between 0.016 ppm and 0.062 ppm (median 0.021 ppm) and O₃ between 0.012 ppm and 0.08 ppm (median 0.016 ppm), both showing modest fluctuations across the three recent entries. SO₂ is recorded from 0.001 ppm to 0.005 ppm, with a median also at 0.001 ppm.

Overall, the coverage is limited to two sites, resulting in uneven depth across pollutants: some have three recent rows, while others are represented by a single measurement. Users should keep in mind that conditions can differ across neighborhoods and that the freshness of the data varies, with the newest observations only a week old and several gases still reflecting values from more than fourteen days ago.

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 dataset for Nezahualcóyotl includes eight valid measurements and is updated within 30 days. The latest data were recorded on 2026-02-10 at 22:00 UTC. These values reflect conditions at the time of sampling and are intended to give a general overview of the city's air quality. However, air quality can vary by location and time within the city.

OpenAQ station rows