SmogRank / Ghana / Greater Accra / Tema

Tema, month by month

Tema has a measured daily mean on 405 days since 21 July 2025. Its worst month was January 2026, at 118 US AQI (42.4 µg/m³), 73rd of 2,617 cities on that month's world ranking. Its cleanest was April 2026, at 65 US AQI (16.8 µg/m³).

Every month since 2025

202681 so far263 days measured257th of 2,791 in the world

Jan118#73 Feb99#193 Mar80#431 Apr65#493 May71#288 Jun79#209 Jul82#199 Aug83#149 Sep66#327 Oct69#126

2025too few days for a mean (a year needs 256)142 days measured

JanFebMarAprMayJunJul11 daysAug84#110 Sep78#155Oct13 daysNov84#275 Dec96#274

Each square is a month's mean PM2.5 in US AQI from Tema'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 Tema 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
Oct 2025	13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks.
Jul 2025	11 of 31 days measured; a month needs 22.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Tema's worst months

Month	US AQI	Days measured	World rank
January 2026	11842.4 µg/m³	27 of 31	73rdof 2,617
February 2026	9935.0 µg/m³	28 of 28	193rdof 2,866
December 2025	9633.0 µg/m³	31 of 31	274thof 3,006
November 2025	8426.9 µg/m³	26 of 30	275thof 2,715
August 2025	8426.7 µg/m³	31 of 31	110thof 2,901
August 2026	8326.4 µg/m³	23 of 31	149thof 2,896

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.

Tema's worst days

Day	US AQI
27 Jan 2026	14352.6 µg/m³
26 Jan 2026	14252.3 µg/m³
3 Feb 2026	14252.3 µg/m³
28 Jan 2026	14252.1 µg/m³
12 Jan 2026	14151.6 µg/m³
29 Jan 2026	13951.1 µg/m³
13 Jan 2026	13649.8 µg/m³
8 Jun 2026	13549.2 µg/m³
1 Jan 2026	13448.8 µg/m³
4 Feb 2026	13448.8 µg/m³

Daily means, the highest since 21 Jul 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, Tema, Ghana, 21 Jul 2025 – 11 Oct 2026. Monitor data from AirGradient via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/gh/tema/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.

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

Updated 2026-10-12 17:07 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).