SmogRank / Philippines / Western Visayas / Iloilo

Iloilo, month by month

Iloilo has a measured daily mean on 687 days since 6 August 2024. Its worst month was September 2026, at 100 US AQI (35.3 µg/m³), 90th of 2,981 cities on that month's world ranking. Its cleanest was December 2024, at 57 US AQI (12.2 µg/m³).

Every month since 2024

202681 so far279 days measured261st of 2,793 in the world
Jan72#403Feb63#756Mar73#562Apr85#263May80#223Jun79#214Jul80#222Aug88#123Sep100#90Oct88#46
202569 for the year326 days measured269th of 2,681 in the world
Jan10 daysFeb17 daysMar66#766Apr68#425May71#266Jun74#205Jul67#256Aug78#141Sep69#243Oct67#310Nov65#520Dec63#696
2024too few days for a mean (a year needs 257)82 days measured
JanFebMarAprMayJunJulAug77#79Sep73#98Oct1 dayNov7 daysDec57#654
Each square is a month's mean PM2.5 in US AQI from Iloilo's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Iloilo marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

4 months
MonthWhy
Feb 202517 of 28 days measured; a month needs 20. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jan 202510 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Nov 20247 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
Oct 20241 of 31 days measured; a month needs 22. The others: 30 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.

Iloilo's worst months

MonthUS AQIDays measuredWorld rank
September 2026 10035.3 µg/m³30 of 3090thof 2,981
August 2026 8828.8 µg/m³31 of 31123rdof 2,896
April 2026 8527.2 µg/m³30 of 30263rdof 2,941
July 2026 8024.7 µg/m³31 of 31222ndof 2,784
May 2026 8024.4 µg/m³31 of 31223rdof 2,874
June 2026 7923.9 µg/m³30 of 30214thof 2,497

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.

Iloilo's worst days

DayUS AQI
2 Sept 2026 15358.9 µg/m³
3 Sept 2026 15256.8 µg/m³
6 Aug 2025 14051.5 µg/m³
1 Sept 2026 13951.0 µg/m³
5 Aug 2025 13549.5 µg/m³
31 Aug 2026 13448.7 µg/m³
19 Sept 2026 13348.6 µg/m³
18 Apr 2026 13248.1 µg/m³
18 Jan 2026 13147.6 µg/m³
17 Aug 2024 13147.5 µg/m³

Daily means, the highest since 6 Aug 2024; 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, Iloilo, Philippines, 6 Aug 2024 – 12 Oct 2026. Monitor data from AirGradient via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/ph/iloilo/history (accessed 12 Oct 2026).

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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.

Iloilo 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).