SmogRank / Nigeria / Oyo State / Ibadan

Ibadan, month by month

Ibadan has a measured daily mean on 133 days since 8 April 2026. Its worst month was June 2026, at 93 US AQI (31.5 µg/m³), 136th of 2,497 cities on that month's world ranking. Its cleanest was September 2026, at 82 US AQI (25.9 µg/m³).

Every month since 2026

2026too few days for a mean (a year needs 199)133 days measured

JanFebMarApr92#218 May85#201 Jun93#136Jul4 daysAug4 daysSep82#166 Oct94#34

Each square is a month's mean PM2.5 in US AQI from Ibadan'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 Ibadan 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

2 months

Month	Why
Aug 2026	4 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Jul 2026	4 of 31 days measured; a month needs 22. The others: 27 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.

Ibadan's worst months

Month	US AQI	Days measured	World rank
June 2026	9331.5 µg/m³	30 of 30	136thof 2,497
April 2026	9231.2 µg/m³	23 of 30	218thof 2,941
May 2026	8527.2 µg/m³	31 of 31	201stof 2,874
September 2026	8225.9 µg/m³	30 of 30	166thof 2,981

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.

Ibadan's worst days

Day	US AQI
26 Jun 2026	13549.2 µg/m³
19 May 2026	13348.6 µg/m³
20 Apr 2026	13248.1 µg/m³
9 Apr 2026	13248.0 µg/m³
16 May 2026	11842.4 µg/m³
14 Jun 2026	11240.1 µg/m³
8 Jun 2026	11039.1 µg/m³
18 Jun 2026	10738.1 µg/m³
17 Apr 2026	10738.0 µg/m³
9 Jun 2026	10737.8 µg/m³

Daily means, the highest since 8 Apr 2026; 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, Ibadan, Nigeria, 8 Apr 2026 – 11 Oct 2026. Monitor data from AirGradient and AirQo via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/ng/ibadan/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.

Ibadan now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 19:07 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).