SmogRank / Philippines / National Capital Region / Quezon City
Quezon City, month by month
Quezon City has a measured daily mean on 1,040 days since 7 September 2023. Its worst month was April 2026, at 106 US AQI (37.4 µg/m³), 154th of 2,941 cities on that month's world ranking. Its cleanest was December 2023, at 58 US AQI (12.9 µg/m³). 2025 averaged 79 US AQI (24.1 µg/m³), against 67 US AQI (17.5 µg/m³) in 2024.
Every month since 2023
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
3 months
| Month | Why |
|---|---|
| Sep 2024 | 14 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 3 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Quezon City's worst months
| Month | US AQI | World rank |
|---|---|---|
| April 2026 | 10637.4 µg/m³ | 154thof 2,941 |
| December 2025 | 9834.5 µg/m³ | 268thof 3,006 |
| January 2026 | 9633.0 µg/m³ | 143rdof 2,617 |
| October 2025 | 9331.8 µg/m³ | 189thof 2,614 |
| June 2024 | 8728.5 µg/m³ | 45thof 2,563 |
| November 2025 | 8426.7 µg/m³ | 278thof 2,715 |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Quezon City's worst days
| Day | US AQI |
|---|---|
| 17 Apr 2026 | 16170.1 µg/m³ |
| 18 Jun 2024 | 16169.1 µg/m³ |
| 20 Apr 2026 | 15966.4 µg/m³ |
| 31 Jan 2026 | 15459.2 µg/m³ |
| 26 Jan 2026 | 15359.0 µg/m³ |
| 16 Jan 2026 | 15358.9 µg/m³ |
| 1 Jan 2025 | 15257.2 µg/m³ |
| 7 May 2025 | 15257.0 µg/m³ |
| 1 Dec 2025 | 15156.0 µg/m³ |
| 16 Jun 2026 | 15155.8 µg/m³ |
Daily means, the highest since 7 Sept 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Quezon City, Philippines, 7 Sep 2023 – 12 Oct 2026. Monitor data from Clarity and AirGradient via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/ph/quezon-city/history (accessed 12 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Quezon City now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).