Air quality comparison · Ivory Coast, 73 km apart
Divo vs Gagnoa Air quality index (AQI) today
Gagnoa has cleaner air than Divo right now: AQI 36 (Good) against 40 (Good).
Both sit in the same EPA band, so the health advice is the same for each today. But over the past 7 days, on modeled daily averages, Divo averaged AQI 34 against 35, and it was the cleaner of the two on 5 of those days. Gagnoa has lost more forest since 2001. Gagnoa has more tree cover.
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Divo40Gagnoa36
Head to head
Divo vs Gagnoa at a glance
Gagnoa is ahead on 4 of 6 measures, and Divo on 2. The better figure in each row is marked.
| Divo | Gagnoa | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 40 | 36 (better) |
| PM2.5Fine particles, µg/m³. | 6.8 | 6.7 (better) |
| Past week's averageUS AQI, 7 days. | 34 (better) | 35 |
| Forest lost since 2001Within 10 km of the center. | 5,770 ha (better) | 8,030 ha |
| Tree coverWithin 2 km of the center. | 9.5% | 15.4% (better) |
| Trees still neededTo reach a healthy canopy. | 64.4K | 45.9K (better) |
Air quality today
What is the air like in Divo and Gagnoa right now?
Gagnoa has cleaner air than Divo right now: AQI 36 (Good) against 40 (Good). PM2.5 is setting the index in both.
Both readings are model estimates, with no ground station close enough to either.
DivoGagnoa
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).
Divo: Estimate · model corrected with 2 station cities within 165 km, e.g. Anyama and Abidjan. Data: Open-Meteo / CAMS, corrected with 2 ground-station cities within 165 km, US EPA index.
Gagnoa: Estimate · model corrected with 2 station cities within 245 km, e.g. Anyama and Abidjan. Data: Open-Meteo / CAMS, corrected with 2 ground-station cities within 245 km, US EPA index.
The past week
Which had cleaner air over the past 7 days?
But over the past 7 days, on modeled daily averages, Divo averaged AQI 34 against 35, 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
- Divo5Gagnoa1
- Average AQI
- Divo34Gagnoa35
- Worst day, AQI
- Divo41Gagnoa42
The daily numbers (7 days)
| Day | Divo | Gagnoa |
|---|---|---|
| Nov 4 | 28 | 32 |
| Nov 5 | 23 | 23 |
| Nov 6 | 34 | 38 |
| Nov 7 | 35 | 36 |
| Nov 8 | 40 | 42 |
| Nov 9 | 41 | 42 |
| Nov 10 | 34 | 32 |
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 Divo and Gagnoa today?
Air quality is satisfactory for everyone. Both are in the same EPA band today (Good), so the advice is the same.
Exercise outdoors
A good day to be active outside.
Windows
Open them to air the house.
Masks
Not needed.
Air purifier
Not needed.
Against everywhere else
How do Divo and Gagnoa compare with the rest of the world?
Right now Divo's air is cleaner than 69% of the 5,420 places Airleaf tracks, and Gagnoa's is cleaner than 73%. Within Ivory Coast, that is 53% and 63% of its 20 measured places.
Cleaner air than…
- Divo
- Beats 69%
- Gagnoa
- Beats 73%
More tree cover than…
- Divo
- Beats 20%
- Gagnoa
- Beats 35%
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, Divo or Gagnoa?
Gagnoa has lost more: about 8,030 ha of forest within 10 km of its center from 2001 to 2025, against 5,770 ha around Divo. 8,030 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: 2017, with 599 ha lost.
Worst year: 2017, with 1,570 ha lost.
| Divo | Gagnoa | |
|---|---|---|
| Forest lost since 2001Cleared, burned or logged. | 5,770 ha (better) | 8,030 ha |
| Share of its forestOf what it had in 2000. | 34% | 34% (better) |
| Cleared for goodTurned into farms, mines or towns. | 5,770 ha (better) | 8,030 ha |
| Recent trend2021–2025 against the five years before. | Slowing down | Slowing down |
| Main known cause | Farms, pasture and plantations (95%) | Farms, pasture and plantations (94%) |
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.
Divo
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km northwest of the city center.
Gagnoa
2017: satellite photo from February 2017 of a 5 × 5 km area about 6 km north of the city center.
Trees
Which has more trees, Divo or Gagnoa?
Gagnoa has more tree cover: 15.4% of the land within 2 km of its center against 9.5% around Divo, or about 48,381 trees against 29,845.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Divo | Gagnoa | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 29.8K | 48.4K (better) |
| Trees still neededTo reach the target. Fewer is better. | 64.4K | 45.9K (better) |
| CO₂ absorbed each yearBy the trees already standing. | 657K kg | 1.1M 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
Divo vs Gagnoa: your questions answered
Is Gagnoa cleaner than Divo?
On air quality, yes, right now: Gagnoa reads AQI 36 against 40, a gap of 4 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. But over the past 7 days, on modeled daily averages, Divo averaged AQI 34 against 35, and it was the cleaner of the two on 5 of those days.
Is it safe to exercise outdoors in Divo and Gagnoa today?
The advice is the same for both today. Air quality is satisfactory for everyone. Divo reads AQI 40 and Gagnoa reads AQI 36.
Which has lost more forest, Divo or Gagnoa?
Gagnoa has lost more: about 8,030 ha of forest within 10 km of its center from 2001 to 2025, against 5,770 ha around Divo. 8,030 ha of that was cleared for good, for farms, mines or towns.
Which has more trees, Divo or Gagnoa?
Gagnoa has more tree cover: 15.4% of the land within 2 km of its center against 9.5% around Divo, or about 48,381 trees against 29,845. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Divo and Gagnoa need?
Divo needs about 64,403 more to reach its canopy target of 30%, and Gagnoa about 45,867 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Divo and Gagnoa 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. Both readings are model estimates, with no ground station close enough to either. Nothing is adjusted for population, city limits or climate.
How often does the Divo vs Gagnoa 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 (Mar 12, 2026 and Aug 4, 2026), and the forest figures are published yearly.
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