Air quality comparison · Sudan, 471 km apart
Kassala vs Port Sudan Air quality index (AQI) today
Port Sudan has cleaner air than Kassala right now: AQI 53 (Moderate) against 59 (Moderate).
Both sit in the same EPA band, so the health advice is the same for each today. But over the past 6 days, on modeled daily averages, Kassala averaged AQI 60 against 72, and it was the cleaner of the two on 6 of those days. Kassala has more tree cover.
Sudan
AQI 59
Moderate
Cleaner right now
- PM2.5
- 14.8 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 21:00 local
Sudan
AQI 53
Moderate
Cleaner right now
- PM2.5
- 9.5 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 11, 09:00 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Kassala59Port Sudan53
Head to head
Kassala vs Port Sudan at a glance
Kassala is ahead on 3 of 5 measures, and Port Sudan on 2. The better figure in each row is marked.
| Kassala | Port Sudan | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 59 | 53 (better) |
| PM2.5Fine particles, µg/m³. | 14.8 | 9.5 (better) |
| Past week's averageUS AQI, 6 days. | 60 (better) | 72 |
| Tree coverWithin 2 km of the center. | 13.8% (better) | 0.6% |
| Trees still neededTo reach a healthy canopy. | 50.9K (better) | 83.9K |
Air quality today
What is the air like in Kassala and Port Sudan right now?
Port Sudan has cleaner air than Kassala right now: AQI 53 (Moderate) against 59 (Moderate). PM2.5 is setting the index in both.
Both readings are model estimates, with no ground station close enough to either.
KassalaPort Sudan
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).
Kassala: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
Port Sudan: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
The past week
Which had cleaner air over the past 6 days?
But over the past 6 days, on modeled daily averages, Kassala averaged AQI 60 against 72, and it was the cleaner of the two on 6 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
- Kassala6Port Sudan0
- Average AQI
- Kassala60Port Sudan72
- Worst day, AQI
- Kassala68Port Sudan92
The daily numbers (6 days)
| Day | Kassala | Port Sudan |
|---|---|---|
| Nov 5 | 59 | 92 |
| Nov 6 | 59 | 73 |
| Nov 7 | 58 | 67 |
| Nov 8 | 68 | 74 |
| Nov 9 | 58 | 65 |
| Nov 10 | 55 | 59 |
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 Kassala and Port Sudan 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 Kassala and Port Sudan compare with the rest of the world?
Right now Kassala's air is cleaner than 48% of the 5,420 places Airleaf tracks, and Port Sudan's is cleaner than 57%. Within Sudan, that is 90% and 95% of its 21 measured places.
Cleaner air than…
- Kassala
- Beats 48%
- Port Sudan
- Beats 57%
More tree cover than…
- Kassala
- Beats 31%
- Port Sudan
- Beats 1%
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.
Kassala
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
Port Sudan
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
Trees
Which has more trees, Kassala or Port Sudan?
Kassala has more tree cover: 13.8% of the land within 2 km of its center against 0.6% around Port Sudan, or about 43,354 trees against 1,712.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Kassala | Port Sudan | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 43.4K (better) | 1.7K |
| Trees still neededTo reach the target. Fewer is better. | 50.9K (better) | 83.9K |
| CO₂ absorbed each yearBy the trees already standing. | 954K kg (better) | 37.7K kg |
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
Kassala vs Port Sudan: your questions answered
Is Port Sudan cleaner than Kassala?
On air quality, yes, right now: Port Sudan reads AQI 53 against 59, a gap of 6 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 6 days, on modeled daily averages, Kassala averaged AQI 60 against 72, and it was the cleaner of the two on 6 of those days.
Is it safe to exercise outdoors in Kassala and Port Sudan today?
The advice is the same for both today. Unusually sensitive people should consider limiting long outdoor exertion. Kassala reads AQI 59 and Port Sudan reads AQI 53.
Which has more trees, Kassala or Port Sudan?
Kassala has more tree cover: 13.8% of the land within 2 km of its center against 0.6% around Port Sudan, or about 43,354 trees against 1,712. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Kassala and Port Sudan need?
Kassala needs about 50,894 more to reach its canopy target of 30%, and Port Sudan about 83,865 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Kassala and Port Sudan 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 Kassala vs Port Sudan 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 15, 2026 and Sep 15, 2026), and the forest figures are published yearly.
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