SmogRank / Ghana / Greater Accra / Ashaiman

Ashaiman, month by month

Ashaiman has a measured daily mean on 423 days since 8 August 2025. Its worst month was January 2026, at 116 US AQI (41.4 µg/m³), 77th of 2,617 cities on that month's world ranking. Its cleanest was October 2025, at 71 US AQI (19.9 µg/m³).

Every month since 2025

202689 so far282 days measured198th of 2,791 in the world

Jan116#77 Feb97#210 Mar82#392 Apr79#325 May77#241 Jun85#167 Jul106#79 Aug103#65 Sep71#269 Oct72#96

2025too few days for a mean (a year needs 256)141 days measured

JanFebMarAprMayJunJulAug94#74 Sep85#118 Oct71#282 Nov81#291 Dec95#279

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

Ashaiman's worst months

Month	US AQI	Days measured	World rank
January 2026	11641.4 µg/m³	31 of 31	77thof 2,617
July 2026	10637.4 µg/m³	30 of 31	79thof 2,784
August 2026	10336.3 µg/m³	31 of 31	65thof 2,896
February 2026	9733.6 µg/m³	28 of 28	210thof 2,866
December 2025	9532.7 µg/m³	31 of 31	279thof 3,006
August 2025	9432.1 µg/m³	24 of 31	74thof 2,901

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.

Ashaiman's worst days

Day	US AQI
31 Jul 2026	15460.1 µg/m³
3 Aug 2026	15358.0 µg/m³
9 Aug 2025	15055.2 µg/m³
20 Jul 2026	14653.7 µg/m³
28 Jan 2026	14653.6 µg/m³
29 Jan 2026	14553.3 µg/m³
11 Sept 2025	14252.2 µg/m³
15 Dec 2025	14252.1 µg/m³
4 Feb 2026	14252.1 µg/m³
4 Aug 2026	14151.7 µg/m³

Daily means, the highest since 8 Aug 2025; 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, Ashaiman, Ghana, 8 Aug 2025 – 11 Oct 2026. Monitor data from AirGradient and Clarity via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/gh/ashaiman/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.

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

Updated 2026-10-12 20:07 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).