Air quality comparison · Ghana, 66 km apart
Cape Coast vs Twifu Praso Air quality index (AQI) today
Twifu Praso has cleaner air than Cape Coast right now: AQI 39 (Good) against 53 (Moderate).
That puts them in different EPA bands, so the health advice differs today. Over the past 6 days, on modeled daily averages, Twifu Praso averaged AQI 39 against 43, and it was the cleaner of the two on 5 of those days. Twifu Praso has lost more forest since 2001. Twifu Praso has more tree cover.
Ghana
AQI 53
Moderate
Cleaner right now
- PM2.5
- 10 µg/m³
- Main pollutant
- PM2.5
- Source
- Ground station
- Reading
- Nov 11, 15:57 local
Ghana
AQI 39
Good
Cleaner right now
- PM2.5
- 7.6 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 15:00 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Cape Coast53Twifu Praso39
Head to head
Cape Coast vs Twifu Praso at a glance
Twifu Praso is ahead on 5 of 6 measures, and Cape Coast on 1. The better figure in each row is marked.
| Cape Coast | Twifu Praso | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 53 | 39 (better) |
| PM2.5Fine particles, µg/m³. | 10 | 7.6 (better) |
| Past week's averageUS AQI, 6 days. | 43 | 39 (better) |
| Forest lost since 2001Within 10 km of the center. | 2,250 ha (better) | 11,800 ha |
| Tree coverWithin 2 km of the center. | 25.5% | 59.7% (better) |
| Trees still neededTo reach a healthy canopy. | 7.4K | 0 (better) |
Air quality today
What is the air like in Cape Coast and Twifu Praso right now?
Twifu Praso has cleaner air than Cape Coast right now: AQI 39 (Good) against 53 (Moderate). PM2.5 is setting the index in both.
Cape Coast is read from a nearby ground station and Twifu Praso is a model estimate, so the two are not quite like for like.
Cape CoastTwifu Praso
Concentrations at the same moment as the index above, for the pollutants both places report. Lower is better. The dark marks on the PM2.5 and PM10 rows show the WHO's 24-hour guidelines (15 and 45 µg/m³).
Cape Coast: Ground station · CCMA Office, 700 m away · median of 2 stations. Data: OpenAQ · Clarity, Ghana AQ.
Twifu Praso: Estimate · model corrected with 8 station cities within 165 km, e.g. Cape Coast and Takoradi. Data: Open-Meteo / CAMS, corrected with 8 ground-station cities within 165 km, US EPA index.
The past week
Which had cleaner air over the past 6 days?
Over the past 6 days, on modeled daily averages, Twifu Praso averaged AQI 39 against 43, and it was the cleaner of the two on 5 of those days. A single reading can catch a city on a bad afternoon; the week says whether it was the weather or the place.
- Cleaner days
- Cape Coast1Twifu Praso5
- Average AQI
- Cape Coast43Twifu Praso39
- Worst day, AQI
- Cape Coast49Twifu Praso45
The daily numbers (6 days)
| Day | Cape Coast | Twifu Praso |
|---|---|---|
| Nov 5 | 35 | 33 |
| Nov 6 | 45 | 42 |
| Nov 7 | 44 | 45 |
| Nov 8 | 49 | 44 |
| Nov 9 | 44 | 43 |
| Nov 10 | 39 | 27 |
Daily averages from the CAMS atmospheric model for both places, so the week compares like with like. They can differ from today's reading at the top of the page wherever that comes from a ground station.
What it means today
Is it safe to go outside in Cape Coast and Twifu Praso today?
Cape Coast (AQI 53, Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Twifu Praso (AQI 39, Good): Air quality is satisfactory for everyone.
Exercise outdoors
- Cape Coast
- Fine for most people; unusually sensitive people should take long or hard exercise easier.
- Twifu Praso
- A good day to be active outside.
Windows
- Cape Coast
- Fine to open; close them if you are sensitive to pollution.
- Twifu Praso
- Open them to air the house.
Masks
- Cape Coast
- Not needed for most people.
- Twifu Praso
- Not needed.
Air purifier
- Cape Coast
- Worth running if you are sensitive.
- Twifu Praso
- Not needed.
Against everywhere else
How do Cape Coast and Twifu Praso compare with the rest of the world?
Right now Cape Coast's air is cleaner than 56% of the 5,420 places Airleaf tracks, and Twifu Praso's is cleaner than 70%. Within Ghana, that is 67% and 92% of its 13 measured places.
Cleaner air than…
- Cape Coast
- Beats 56%
- Twifu Praso
- Beats 70%
More tree cover than…
- Cape Coast
- Beats 59%
- Twifu Praso
- Beats 96%
Includes model estimates as well as station readings, so it can differ from our most polluted and cleanest air rankings, which use station readings only.
Deforestation · 2001–2025
Which has lost more forest, Cape Coast or Twifu Praso?
Twifu Praso has lost more: about 11,800 ha of forest within 10 km of its center from 2001 to 2025, against 2,250 ha around Cape Coast. 11,800 ha of that was cleared for good, for farms, mines or towns.
Measured within 10 km of each center, from the yearly satellite maps of forest loss: a wider circle than the one for tree cover, because forest is usually lost at a city's edges.
Worst year: 2001, with 225 ha lost.
Worst year: 2018, with 2,020 ha lost.
| Cape Coast | Twifu Praso | |
|---|---|---|
| Forest lost since 2001Cleared, burned or logged. | 2,250 ha (better) | 11,800 ha |
| Share of its forestOf what it had in 2000. | 39% (better) | 40% |
| Cleared for goodTurned into farms, mines or towns. | 2,250 ha (better) | 11,800 ha |
| Recent trend2021–2025 against the five years before. | Slowing down | Slowing down |
| Main known cause | Farms, pasture and plantations (56%) | Farms, pasture and plantations (98%) |
Satellite timelapses
Watch both change, year by year
A clear satellite photo a year of the land around each city. Press play, turn on the forest cleared since the first year, or drag the before and after.
Cape Coast
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km north of the city center.
Twifu Praso
2017: satellite photo from January 2017 of a 5 × 5 km area about 4 km southeast of the city center.
Trees
Which has more trees, Cape Coast or Twifu Praso?
Twifu Praso has more tree cover: 59.7% of the land within 2 km of its center against 25.5% around Cape Coast, or about 186,615 trees against 41,658.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Cape Coast | Twifu Praso | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 41.7K | 187K (better) |
| Trees still neededTo reach the target. Fewer is better. | 7.4K | 0 (better) |
| CO₂ absorbed each yearBy the trees already standing. | 916K kg | 4.1M kg (better) |
Tree cover on the satellite image
The same 2 km radius around each center, with the tree cover the satellite found marked on it.
Reading these numbers
How this comparison is made
Air quality index
The US EPA index, computed from current pollutant concentrations: ground stations where a place has them nearby, and the CAMS atmospheric model everywhere else. It moves hour to hour, so it is a snapshot rather than a verdict on either place. The guideline marks are from the WHO's 2021 air quality guidelines.
Trees and forest
Tree cover is the share of ground under canopy within 2 km of each center, read from Sentinel-2 satellite imagery at 10 m detail. It measures that circle, not the whole municipality, which is what makes the two comparable. Forest loss comes from the University of Maryland's Global Forest Change maps.
More on the method on the About Airleaf page.
Frequently asked
Cape Coast vs Twifu Praso: your questions answered
Is Twifu Praso cleaner than Cape Coast?
On air quality, yes, right now: Twifu Praso reads AQI 39 against 53, a gap of 14 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. Over the past 6 days, on modeled daily averages, Twifu Praso averaged AQI 39 against 43, and it was the cleaner of the two on 5 of those days.
Is it safe to exercise outdoors in Cape Coast and Twifu Praso today?
In Cape Coast, at AQI 53: Unusually sensitive people should consider limiting long outdoor exertion. In Twifu Praso, at AQI 39: Air quality is satisfactory for everyone.
Which has lost more forest, Cape Coast or Twifu Praso?
Twifu Praso has lost more: about 11,800 ha of forest within 10 km of its center from 2001 to 2025, against 2,250 ha around Cape Coast. 11,800 ha of that was cleared for good, for farms, mines or towns.
Which has more trees, Cape Coast or Twifu Praso?
Twifu Praso has more tree cover: 59.7% of the land within 2 km of its center against 25.5% around Cape Coast, or about 186,615 trees against 41,658. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Cape Coast and Twifu Praso need?
Cape Coast needs about 7,351 more to reach its canopy target of 30%, and Twifu Praso about 0 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Cape Coast and Twifu Praso measured the same way?
The method is the same: the US EPA index for air, and Sentinel-2 satellite imagery at 10 m detail over an identical radius for trees. Cape Coast is read from a nearby ground station and Twifu Praso is a model estimate, so the two are not quite like for like. Nothing is adjusted for population, city limits or climate.
How often does the Cape Coast vs Twifu Praso comparison update?
The air readings refresh about once an hour, and each reading's local time is shown at the top of the page. Tree cover comes from the latest clear satellite image of each area (Oct 29, 2026 and Apr 15, 2026), and the forest figures are published yearly.
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