Air quality in Quezon City, Philippines today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Quezon City, Philippines

⚠️ 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 today in Quezon City is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 41.73 µg/m³.

Data for this assessment come from OpenAQ and are based on eleven valid measurements taken recently. 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 Quezon City includes five measured pollutants – PM1, PM2.5, relative humidity, temperature and UM003 (particle concentration) – collected from a total of twenty sensor readings across seven monitoring stations. The most recent observations were all recorded on 2026-02-10 at 23:00 UTC, so the data are fresh within the past week for every pollutant.

PM2.5 values span from a minimum of 0 µg/m³ to a maximum of 41.73 µg/m³, with a median of 8.8 µg/m³ and the 10th‑percentile at 0.02 µg/m³ and the 90th‑percentile at 28.21 µg/m³. PM1 shows a similar spread, ranging from 0 µg/m³ up to 28.78 µg/m³; its median is 0 µg/m³, the 10th‑percentile is 0 µg/m³ and the 90th‑percentile reaches 23.02 µg/m³. Temperature measurements vary between 24.48 °C and 33.68 °C, with a median of 25.78 °C; the lower decile sits at 24.74 °C while the upper decile is 31.44 °C. Relative humidity ranges from 50.03 % to 61.21 %, median 52.21 %; the 10th‑percentile is 50.47 % and the 90th‑percentile 59.41 %. UM003 particle counts are the most variable, from 40.32 particles/cm³ up to 1 924.92 particles/cm³, median 121.04 particles/cm³, with the 10th‑percentile at 56.46 and the 90th‑percentile at 1 564.14 particles/cm³.

Coverage is uneven: PM2.5 has seven rows of data, whereas temperature, relative humidity and UM003 each have only four or three rows, and PM1 also appears in just three rows. While all timestamps are recent, the limited number of observations for several pollutants means that city‑wide conditions can differ by location and time, and a fuller picture would require more extensive sampling across additional stations.

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 11 valid measurements and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 23:00 UTC. This snapshot provides a city‑wide overview, but air quality can differ across neighborhoods and change rapidly throughout the day, so conditions at any specific location or moment may vary from what is displayed here.

OpenAQ station rows