Air quality comparison · Tunisia, 118 km apart
Sousse vs Tunis Air quality index (AQI) today
Sousse has cleaner air than Tunis right now: AQI 60 (Moderate) against 69 (Moderate).
Both sit in the same EPA band, so the health advice is the same for each today. Over the past 7 days, on modeled daily averages, Sousse averaged AQI 43 against 56, and it was the cleaner of the two on 7 of those days. Tunis has more tree cover.
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Sousse60Tunis69
Head to head
Sousse vs Tunis at a glance
Sousse is ahead on 3 of 5 measures, and Tunis on 2. The better figure in each row is marked.
| Sousse | Tunis | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 60 (better) | 69 |
| PM2.5Fine particles, µg/m³. | 13.1 (better) | 16.4 |
| Past week's averageUS AQI, 7 days. | 43 (better) | 56 |
| Tree coverWithin 2 km of the center. | 2.1% | 12.4% (better) |
| Trees still neededTo reach a healthy canopy. | 58.6K | 55.3K (better) |
Air quality today
What is the air like in Sousse and Tunis right now?
Sousse has cleaner air than Tunis right now: AQI 60 (Moderate) against 69 (Moderate). PM2.5 is setting the index in both.
Tunis's PM2.5 is about 1.1× the WHO's 24-hour guideline of 15 µg/m³.
Both readings are model estimates, with no ground station close enough to either.
SousseTunis
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).
Sousse: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
Tunis: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
The past week
Which had cleaner air over the past 7 days?
Over the past 7 days, on modeled daily averages, Sousse averaged AQI 43 against 56, and it was the cleaner of the two on 7 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
- Sousse7Tunis0
- Average AQI
- Sousse43Tunis56
- Worst day, AQI
- Sousse58Tunis77
The daily numbers (7 days)
| Day | Sousse | Tunis |
|---|---|---|
| Nov 5 | 35 | 56 |
| Nov 6 | 42 | 46 |
| Nov 7 | 43 | 44 |
| Nov 8 | 27 | 55 |
| Nov 9 | 41 | 50 |
| Nov 10 | 58 | 61 |
| Nov 11 | 58 | 77 |
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 Sousse and Tunis today?
Unusually sensitive people should consider limiting long outdoor exertion. Both are in the same EPA band today (Moderate), so the advice is the same.
Exercise outdoors
Fine for most people; unusually sensitive people should take long or hard exercise easier.
Windows
Fine to open; close them if you are sensitive to pollution.
Masks
Not needed for most people.
Air purifier
Worth running if you are sensitive.
Against everywhere else
How do Sousse and Tunis compare with the rest of the world?
Right now Sousse's air is cleaner than 47% of the 5,420 places Airleaf tracks, and Tunis's is cleaner than 39%. Within Tunisia, that is 44% and 11% of its 10 measured places.
Cleaner air than…
- Sousse
- Beats 47%
- Tunis
- Beats 39%
More tree cover than…
- Sousse
- Beats 4%
- Tunis
- Beats 27%
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.
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.
Sousse
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
Tunis
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
Trees
Which has more trees, Sousse or Tunis?
Tunis has more tree cover: 12.4% of the land within 2 km of its center against 2.1% around Sousse, or about 38,956 trees against 4,414.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Sousse | Tunis | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 4.4K | 39.0K (better) |
| Trees still neededTo reach the target. Fewer is better. | 58.6K | 55.3K (better) |
| CO₂ absorbed each yearBy the trees already standing. | 97.1K kg | 857K 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
Sousse vs Tunis: your questions answered
Is Sousse cleaner than Tunis?
On air quality, yes, right now: Sousse reads AQI 60 against 69, a gap of 9 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 7 days, on modeled daily averages, Sousse averaged AQI 43 against 56, and it was the cleaner of the two on 7 of those days.
Is it safe to exercise outdoors in Sousse and Tunis today?
The advice is the same for both today. Unusually sensitive people should consider limiting long outdoor exertion. Sousse reads AQI 60 and Tunis reads AQI 69.
Which has more trees, Sousse or Tunis?
Tunis has more tree cover: 12.4% of the land within 2 km of its center against 2.1% around Sousse, or about 38,956 trees against 4,414. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Sousse and Tunis need?
Sousse needs about 58,638 more to reach its canopy target of 30%, and Tunis about 55,292 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Sousse and Tunis 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 Sousse vs Tunis 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 (Sep 16, 2026 and Sep 9, 2026), and the forest figures are published yearly.
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