Air quality in Querétaro, Querétaro, Mexico today

Mr. Duck’s Air Quality Score

Moderate air today for Querétaro, Querétaro, 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 Querétaro today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 16.43 µg/m³ and a PM10 level of 45.77 µg/m³, based on twenty valid observations collected through OpenAQ.

These values reflect the current monitoring results for the city. 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 Querétaro pulls in measurements from four monitoring sites that together contribute 25 recent observations across eight key pollutants: carbon monoxide (CO), nitrogen oxides (NO, NO₂, NOX), ozone (O₃), fine particulate matter (PM2.5), coarse particulate matter (PM10) and sulfur dioxide (SO₂). All values were recorded at the same moment – 2026‑02‑10 22:00 UTC – so the information is uniformly fresh, falling within the “updated within 7 days” category for every pollutant.

Across the four stations the data show a fairly tight spread for most gases. CO ranges from 0.16 to 0.93 ppm with a median of 0.39 ppm; NO₂ sits between 0.0019 and 0.0101 ppm, median 0.0069 ppm; O₃ varies from 0.0062 to 0.0528 ppm, median 0.047 ppm; SO₂ is measured between 0.002 and 0.0033 ppm, median about 0.0026 ppm. The particulate measurements are less variable: PM2.5 values lie between 9.4 and 16.4 µg/m³ (median 14.8 µg/m³) while the single PM10 reading is 45.77 µg/m³.

Coverage differs among pollutants. CO, NO₂, O₃, PM2.5 and SO₂ each have four recent rows, reflecting full station participation. In contrast, NO and NOX are reported from only two stations, and PM10 comes from a single site, indicating gaps that could miss localized spikes. Because the dataset is limited to one timestamp, it captures only a snapshot; actual air quality in Querétaro can change throughout the day and across neighborhoods, especially for pollutants with fewer reporting locations.

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 Querétaro reflects 20 valid measurements and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of citywide air quality but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows