SmogRank / Ghana / Greater Accra

Air quality in Ashaiman

Greater Accra, Ghana. PM2.5 from 4 low-cost sensors, updated hourly.

28.3 µg/m³
Moderate

Latest hour (05:00 UTC), 1.9× the WHO 24-hour guideline.

Rank

24 h
–
not enough data
7 days
#135
of 2,330 · 22.3 µg/m³
30 days
#168
of 2,327 · 20.0 µg/m³
Year
#133
of 2,160 · 29.9 µg/m³

Why it ranks here

Seasonal. Over the past year its worst months were January, February, July, August, averaging up to 41.4 µg/m³ against 19.9 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Ashaiman's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

Last 4 days, hour by hour

15302026-10-01 00:00 UTC: 23.2 µg/m³2026-10-01 01:00 UTC: 18.6 µg/m³2026-10-01 02:00 UTC: 17.6 µg/m³2026-10-01 03:00 UTC: 21.0 µg/m³2026-10-01 04:00 UTC: 18.4 µg/m³2026-10-01 05:00 UTC: 28.3 µg/m³Sep 28Sep 29Sep 30Oct 1

Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: 17.7 µg/m³2025-09-30: 30.7 µg/m³2025-10-01: 17.5 µg/m³2025-10-02: 17.3 µg/m³2025-10-03: 15.1 µg/m³2025-10-04: 16.7 µg/m³2025-10-05: 15.3 µg/m³2025-10-06: no data2025-10-07: no data2025-10-08: no data2025-10-09: no data2025-10-10: 17.8 µg/m³2025-10-11: 15.8 µg/m³2025-10-12: 22.9 µg/m³2025-10-13: 34.1 µg/m³2025-10-14: 16.7 µg/m³2025-10-15: 23.8 µg/m³2025-10-16: 15.4 µg/m³2025-10-17: 14.1 µg/m³2025-10-18: 21.7 µg/m³2025-10-19: 20.4 µg/m³2025-10-20: 19.1 µg/m³2025-10-21: 21.9 µg/m³2025-10-22: 18.3 µg/m³2025-10-23: 22.9 µg/m³2025-10-24: 20.4 µg/m³2025-10-25: 25.1 µg/m³2025-10-26: 21.1 µg/m³2025-10-27: 25.1 µg/m³2025-10-28: 20.6 µg/m³2025-10-29: 19.9 µg/m³2025-10-30: 18.0 µg/m³2025-10-31: 19.8 µg/m³2025-11-01: 17.9 µg/m³2025-11-02: 19.9 µg/m³2025-11-03: 15.9 µg/m³2025-11-04: 21.7 µg/m³2025-11-05: 20.8 µg/m³2025-11-06: 19.9 µg/m³2025-11-07: 31.9 µg/m³2025-11-08: 31.1 µg/m³2025-11-09: 20.9 µg/m³2025-11-10: 21.9 µg/m³2025-11-11: 21.2 µg/m³2025-11-12: 20.9 µg/m³2025-11-13: 43.4 µg/m³2025-11-14: no data2025-11-15: 23.8 µg/m³2025-11-16: 24.2 µg/m³2025-11-17: 27.8 µg/m³2025-11-18: 30.4 µg/m³2025-11-19: 23.3 µg/m³2025-11-20: 27.8 µg/m³2025-11-21: 26.7 µg/m³2025-11-22: 26.0 µg/m³2025-11-23: 20.5 µg/m³2025-11-24: 25.1 µg/m³2025-11-25: 28.5 µg/m³2025-11-26: 38.3 µg/m³2025-11-27: 28.6 µg/m³2025-11-28: 25.2 µg/m³2025-11-29: 28.6 µg/m³2025-11-30: 23.3 µg/m³2025-12-01: 25.4 µg/m³2025-12-02: 27.0 µg/m³2025-12-03: 33.2 µg/m³2025-12-04: 27.7 µg/m³2025-12-05: 32.5 µg/m³2025-12-06: 25.7 µg/m³2025-12-07: 25.0 µg/m³2025-12-08: 35.6 µg/m³2025-12-09: 42.7 µg/m³2025-12-10: 28.1 µg/m³2025-12-11: 27.9 µg/m³2025-12-12: 31.9 µg/m³2025-12-13: 33.7 µg/m³2025-12-14: 27.6 µg/m³2025-12-15: 52.1 µg/m³2025-12-16: 39.9 µg/m³2025-12-17: 30.7 µg/m³2025-12-18: 30.1 µg/m³2025-12-19: 29.9 µg/m³2025-12-20: 28.8 µg/m³2025-12-21: 33.8 µg/m³2025-12-22: 42.5 µg/m³2025-12-23: 37.2 µg/m³2025-12-24: 34.1 µg/m³2025-12-25: 34.0 µg/m³2025-12-26: 31.8 µg/m³2025-12-27: 32.9 µg/m³2025-12-28: 27.9 µg/m³2025-12-29: 35.6 µg/m³2025-12-30: 31.3 µg/m³2025-12-31: 36.6 µg/m³2026-01-01: 47.4 µg/m³2026-01-02: 33.0 µg/m³2026-01-03: 32.5 µg/m³2026-01-04: 26.5 µg/m³2026-01-05: 29.5 µg/m³2026-01-06: 29.9 µg/m³2026-01-07: 30.6 µg/m³2026-01-08: 37.1 µg/m³2026-01-09: 42.3 µg/m³2026-01-10: 41.1 µg/m³2026-01-11: 41.7 µg/m³2026-01-12: 47.7 µg/m³2026-01-13: 50.1 µg/m³2026-01-14: 40.5 µg/m³2026-01-15: 34.3 µg/m³2026-01-16: 43.8 µg/m³2026-01-17: 43.3 µg/m³2026-01-18: 47.6 µg/m³2026-01-19: 46.1 µg/m³2026-01-20: 37.8 µg/m³2026-01-21: 37.2 µg/m³2026-01-22: 35.4 µg/m³2026-01-23: 43.9 µg/m³2026-01-24: 39.0 µg/m³2026-01-25: 43.7 µg/m³2026-01-26: 48.4 µg/m³2026-01-27: 51.1 µg/m³2026-01-28: 53.6 µg/m³2026-01-29: 53.3 µg/m³2026-01-30: 47.3 µg/m³2026-01-31: 46.8 µg/m³2026-02-01: 42.5 µg/m³2026-02-02: 45.6 µg/m³2026-02-03: 48.0 µg/m³2026-02-04: 52.1 µg/m³2026-02-05: 34.5 µg/m³2026-02-06: 33.1 µg/m³2026-02-07: 31.7 µg/m³2026-02-08: 41.1 µg/m³2026-02-09: 28.6 µg/m³2026-02-10: 27.7 µg/m³2026-02-11: 33.7 µg/m³2026-02-12: 37.4 µg/m³2026-02-13: 26.5 µg/m³2026-02-14: 41.5 µg/m³2026-02-15: 28.1 µg/m³2026-02-16: 18.7 µg/m³2026-02-17: 24.0 µg/m³2026-02-18: 27.6 µg/m³2026-02-19: 29.4 µg/m³2026-02-20: 32.0 µg/m³2026-02-21: 34.9 µg/m³2026-02-22: 38.2 µg/m³2026-02-23: 32.3 µg/m³2026-02-24: 29.1 µg/m³2026-02-25: 34.0 µg/m³2026-02-26: 36.2 µg/m³2026-02-27: 28.1 µg/m³2026-02-28: 24.0 µg/m³2026-03-01: 35.5 µg/m³2026-03-02: 27.2 µg/m³2026-03-03: 29.8 µg/m³2026-03-04: 26.5 µg/m³2026-03-05: 25.9 µg/m³2026-03-06: 29.6 µg/m³2026-03-07: 30.8 µg/m³2026-03-08: 40.6 µg/m³2026-03-09: 35.8 µg/m³2026-03-10: 33.7 µg/m³2026-03-11: 31.4 µg/m³2026-03-12: 24.4 µg/m³2026-03-13: 27.8 µg/m³2026-03-14: 25.5 µg/m³2026-03-15: 30.6 µg/m³2026-03-16: 25.6 µg/m³2026-03-17: 19.9 µg/m³2026-03-18: 20.2 µg/m³2026-03-19: 20.2 µg/m³2026-03-20: 17.2 µg/m³2026-03-21: 18.7 µg/m³2026-03-22: 19.8 µg/m³2026-03-23: 27.9 µg/m³2026-03-24: 21.0 µg/m³2026-03-25: 17.4 µg/m³2026-03-26: 20.9 µg/m³2026-03-27: 16.4 µg/m³2026-03-28: 15.9 µg/m³2026-03-29: 22.9 µg/m³2026-03-30: 43.4 µg/m³2026-03-31: 19.5 µg/m³2026-04-01: 27.4 µg/m³2026-04-02: 37.7 µg/m³2026-04-03: 27.5 µg/m³2026-04-04: 19.2 µg/m³2026-04-05: 18.3 µg/m³2026-04-06: 21.7 µg/m³2026-04-07: 27.9 µg/m³2026-04-08: 22.9 µg/m³2026-04-09: 31.2 µg/m³2026-04-10: no data2026-04-11: 15.7 µg/m³2026-04-12: 23.7 µg/m³2026-04-13: 19.3 µg/m³2026-04-14: 21.3 µg/m³2026-04-15: 23.1 µg/m³2026-04-16: 8.7 µg/m³2026-04-17: 16.3 µg/m³2026-04-18: 17.6 µg/m³2026-04-19: 20.9 µg/m³2026-04-20: 25.2 µg/m³2026-04-21: 18.4 µg/m³2026-04-22: 24.8 µg/m³2026-04-23: 24.9 µg/m³2026-04-24: 33.1 µg/m³2026-04-25: 16.6 µg/m³2026-04-26: 25.5 µg/m³2026-04-27: 26.0 µg/m³2026-04-28: 33.0 µg/m³2026-04-29: 30.1 µg/m³2026-04-30: 39.1 µg/m³2026-05-01: 23.2 µg/m³2026-05-02: 16.2 µg/m³2026-05-03: 17.2 µg/m³2026-05-04: 14.2 µg/m³2026-05-05: 22.9 µg/m³2026-05-06: 35.1 µg/m³2026-05-07: 31.0 µg/m³2026-05-08: 21.2 µg/m³2026-05-09: 18.7 µg/m³2026-05-10: 18.9 µg/m³2026-05-11: 16.3 µg/m³2026-05-12: 16.4 µg/m³2026-05-13: 15.4 µg/m³2026-05-14: 16.4 µg/m³2026-05-15: 28.5 µg/m³2026-05-16: 31.7 µg/m³2026-05-17: 16.0 µg/m³2026-05-18: 14.1 µg/m³2026-05-19: 16.6 µg/m³2026-05-20: 20.3 µg/m³2026-05-21: 21.7 µg/m³2026-05-22: 19.4 µg/m³2026-05-23: 24.0 µg/m³2026-05-24: 20.4 µg/m³2026-05-25: 27.6 µg/m³2026-05-26: 30.1 µg/m³2026-05-27: 30.7 µg/m³2026-05-28: 35.6 µg/m³2026-05-29: 40.7 µg/m³2026-05-30: 24.8 µg/m³2026-05-31: 25.9 µg/m³2026-06-01: 25.9 µg/m³2026-06-02: 32.6 µg/m³2026-06-03: 26.4 µg/m³2026-06-04: 18.7 µg/m³2026-06-05: 26.0 µg/m³2026-06-06: 21.5 µg/m³2026-06-07: 31.7 µg/m³2026-06-08: 50.8 µg/m³2026-06-09: 38.6 µg/m³2026-06-10: 38.4 µg/m³2026-06-11: 24.9 µg/m³2026-06-12: 26.2 µg/m³2026-06-13: 21.3 µg/m³2026-06-14: 17.7 µg/m³2026-06-15: 16.6 µg/m³2026-06-16: 24.7 µg/m³2026-06-17: 31.5 µg/m³2026-06-18: 25.6 µg/m³2026-06-19: 28.5 µg/m³2026-06-20: 20.7 µg/m³2026-06-21: 19.1 µg/m³2026-06-22: 21.7 µg/m³2026-06-23: 18.1 µg/m³2026-06-24: 25.9 µg/m³2026-06-25: 39.8 µg/m³2026-06-26: 28.4 µg/m³2026-06-27: 31.6 µg/m³2026-06-28: 27.6 µg/m³2026-06-29: 23.3 µg/m³2026-06-30: 34.0 µg/m³2026-07-01: 23.0 µg/m³2026-07-02: 33.7 µg/m³2026-07-03: 23.6 µg/m³2026-07-04: 29.9 µg/m³2026-07-05: 21.4 µg/m³2026-07-06: 28.8 µg/m³2026-07-07: 33.9 µg/m³2026-07-08: 40.8 µg/m³2026-07-09: 38.1 µg/m³2026-07-10: no data2026-07-11: 39.0 µg/m³2026-07-12: 43.2 µg/m³2026-07-13: 36.0 µg/m³2026-07-14: 33.9 µg/m³2026-07-15: 27.5 µg/m³2026-07-16: 35.4 µg/m³2026-07-17: 46.0 µg/m³2026-07-18: 42.0 µg/m³2026-07-19: 46.9 µg/m³2026-07-20: 53.7 µg/m³2026-07-21: 39.5 µg/m³2026-07-22: 42.6 µg/m³2026-07-23: 50.1 µg/m³2026-07-24: 31.3 µg/m³2026-07-25: 36.5 µg/m³2026-07-26: 44.3 µg/m³2026-07-27: 37.5 µg/m³2026-07-28: 31.0 µg/m³2026-07-29: 29.6 µg/m³2026-07-30: 41.5 µg/m³2026-07-31: 60.1 µg/m³2026-08-01: 45.6 µg/m³2026-08-02: 49.6 µg/m³2026-08-03: 58.0 µg/m³2026-08-04: 51.7 µg/m³2026-08-05: 48.7 µg/m³2026-08-06: 44.4 µg/m³2026-08-07: 32.7 µg/m³2026-08-08: 40.8 µg/m³2026-08-09: 43.3 µg/m³2026-08-10: 35.5 µg/m³2026-08-11: 28.0 µg/m³2026-08-12: 39.9 µg/m³2026-08-13: 34.6 µg/m³2026-08-14: 22.8 µg/m³2026-08-15: 24.0 µg/m³2026-08-16: 34.0 µg/m³2026-08-17: 37.1 µg/m³2026-08-18: 37.6 µg/m³2026-08-19: 28.1 µg/m³2026-08-20: 32.1 µg/m³2026-08-21: 28.9 µg/m³2026-08-22: 47.4 µg/m³2026-08-23: 40.2 µg/m³2026-08-24: 41.6 µg/m³2026-08-25: 33.8 µg/m³2026-08-26: 27.7 µg/m³2026-08-27: 22.8 µg/m³2026-08-28: 27.0 µg/m³2026-08-29: 34.1 µg/m³2026-08-30: 28.0 µg/m³2026-08-31: 26.3 µg/m³2026-09-01: 21.7 µg/m³2026-09-02: 18.9 µg/m³2026-09-03: 16.8 µg/m³2026-09-04: 22.1 µg/m³2026-09-05: 17.8 µg/m³2026-09-06: 20.7 µg/m³2026-09-07: 23.9 µg/m³2026-09-08: 18.1 µg/m³2026-09-09: 17.0 µg/m³2026-09-10: 17.5 µg/m³2026-09-11: 10.5 µg/m³2026-09-12: 20.9 µg/m³2026-09-13: 15.8 µg/m³2026-09-14: 20.6 µg/m³2026-09-15: 21.1 µg/m³2026-09-16: 16.4 µg/m³2026-09-17: 17.8 µg/m³2026-09-18: 25.6 µg/m³2026-09-19: 27.1 µg/m³2026-09-20: 24.0 µg/m³2026-09-21: 18.2 µg/m³2026-09-22: 18.7 µg/m³2026-09-23: 12.5 µg/m³2026-09-24: 15.0 µg/m³2026-09-25: 18.2 µg/m³2026-09-26: 22.9 µg/m³2026-09-27: 20.7 µg/m³2026-09-28: 25.2 µg/m³2026-09-29: 27.8 µg/m³2026-09-30: 26.2 µg/m³
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

351 of 358 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#840OctNovDecJanFebMarAprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2026: 41.4 µg/m³JanFeb 2026: 33.6 µg/m³FebMar 2026: 25.9 µg/m³MarApr 2026: 24.0 µg/m³AprMay 2026: 22.9 µg/m³MayJun 2026: 27.3 µg/m³JunJul 2026: 37.4 µg/m³JulAug 2025: 32.1 µg/m³Aug 2026: 36.3 µg/m³AugSep 2025: 27.2 µg/m³Sep 2026: 20.0 µg/m³SepOct 2025: 19.9 µg/m³OctNov 2025: 25.4 µg/m³NovDec 2025: 32.7 µg/m³Dec

Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 22.3 µg/m³22.320252025: 15.2 µg/m³15.2

Mean PM2.5 for 24 Sept to 30 Sept in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Tema Community 7, Royal School CC BY 4.0EPA GhanaLow-cost
Divine healer's Church, BethlehemCC BY 4.0EPA GhanaLow-cost
Ashiaman Market Area CC0 1.0Breathe AccraLow-cost
Tema Community 25 Estate 1CC BY 4.0EPA GhanaLow-cost

No reference monitor here, so the value is the median of low-cost sensors (at least two reporting each hour). Low-cost sensors can read high in humid air. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Ghana

Tema 16.9Accra 15.0Adenta 15.0

30-day averages, µg/m³. All of Ghana →

Updated 2026-10-01 06:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.