Modeled air-quality planning
Air quality in Yei, Central Equatoria, South Sudan: forecast and best time outside
Use this page to check the modeled air-quality outlook for Yei, Central Equatoria, South Sudan and compare practical periods before making an outdoor plan. The live card uses the same teaser-to-email flow as the main AirAgora tool; the factual context below comes from the licensed GeoNames city record.
- Population rank in directory
- #%!d(float64=2294) of 2,500
- Population in source record
- 260,720
Current modeled outlook
Current modeled outlook for Yei
AirAgora requests the current OpenWeather 1–5 category and source timestamp through the official API. The anonymous card stays concise, while the complete 24-hour comparison remains email-gated.
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GeoNames · CC BY 4.0
GeoNames facts for Yei
These fields describe the GeoNames populated-place record associated with this page. They do not describe local pollution causes or typical conditions.
- Population in source record
- 260,720
- Population rank in directory
- #%!d(float64=2294) of 2,500
- Population rank among included cities in this country
- #%!d(float64=3) of %!d(float64=3) included cities in South Sudan
- GeoNames administrative-area label
- Central Equatoria
- IANA timezone
- Africa/Juba · UTC+02:00
- Elevation / terrain model
- %!s(float64=836) m (DEM field)
- GeoNames coordinates
- 4.0944°, 30.6764°
- GeoNames record modified
- January 10, 2022
What the place facts mean for this page
AirAgora orders the selected cities by GeoNames population, using GeoNames ID only to break ties. On that basis, Yei is number %!d(float64=2294) with a source population of 260,720 in the under 500,000 range.
Yei is the %!d(float64=3)-ranked included city for South Sudan; the corpus contains %!d(float64=3) qualifying cities from that country. Yei belongs to the Africa region and lies in the Northern hemisphere.
The GeoNames DEM field reports %!s(float64=836) m (DEM field), which falls in the broad high-elevation range used in this directory. AirAgora does not infer pollution, climate, or personal exposure from elevation.
Local date, timezone, and clock behavior
Planning windows for Yei use the IANA timezone Africa/Juba. On this page's publication date, the local date is Sunday, July 19, 2026 and the UTC offset is UTC+02:00.
The January and July reference offsets are both UTC+02:00. No seasonal offset change appears in the 2026 reference check, although timezone rules can still change in future database releases.
Which provider air-quality scale is shown for Yei?
AirAgora displays OpenWeather’s official air-pollution scale from 1 to 5. It is not labeled European AQI, U.S. AQI, or a local regulatory index.
The provider category is preserved for display. AirAgora derives continuous internal severity from documented pollutant concentration bands for ranking; that internal value is not a synthetic AQI or a promise of safety.
Modeled forecast and local limits
Yei uses the OpenWeather modeled air-pollution forecast. The selected coordinate represents provider forecast data, not a street-level monitor, indoor measurement, or personal exposure estimate.
OpenWeather 1–5
The official provider category stays visible and is not relabeled as a regulatory AQI.
Pollutant severity
Internal scoring comes from documented concentration bands and is never presented as a synthetic AQI.
How to use the Yei planner
Start with the live current-category teaser, choose the activity, then use the email reveal for a complete hourly comparison. AirAgora evaluates complete two-hour windows starting between 06:00 and 22:00 local time. It gives 70% of the score to mean severity and 30% to the worst hour, keeps an earlier window when scores are materially tied, and avoids naming a winner when the difference is too small.%!(EXTRA string=Yei)
If every practical period remains in a poor category, the result is described as the least polluted available window rather than as good or safe. Missing hours, provider errors, and stale data remain visible instead of being filled with invented values.
Open the best-time-outside toolNearby cities in the validated corpus
Distances below are great-circle approximations between GeoNames city coordinates. They help navigate AirAgora's 2,500-city directory; they are not route distances and do not imply similar air conditions.
Questions about air quality in Yei
Which air-quality scale does AirAgora show for Yei, Central Equatoria, South Sudan?
For Yei, Central Equatoria, South Sudan, AirAgora displays OpenWeather’s official air-pollution scale from 1 to 5. It is not labeled as European, U.S., or local regulatory AQI.
What timezone does the Yei, Central Equatoria, South Sudan forecast use?
The city record uses Africa/Juba. Forecast timestamps and candidate windows are converted into that IANA timezone; the 2026 reference offset is UTC+02:00.
Is the Yei, Central Equatoria, South Sudan result a street-level measurement?
No. It is a modeled OpenWeather air-pollution forecast for the selected coordinate, not a street-level monitor. A nearby station, route, indoor space, or local event can differ.%!(EXTRA string=Yei, Central Equatoria, South Sudan)
Where does the population figure for Yei, Central Equatoria, South Sudan come from?
The page reports the GeoNames value of Yei, Central Equatoria, South Sudan and population rank %!d(string=260,720) in AirAgora's 2,500-city directory. It is source metadata, not a live population estimate.%!(EXTRA float64=2294)
Which supported city pages are nearest to Yei, Central Equatoria, South Sudan?
The nearest city-directory pages are Yei, Central Equatoria, South Sudan. Distances use city coordinates and are approximate great-circle values, not driving routes.%!(EXTRA string=Juba (South Sudan), Bunia (Congo - Kinshasa), Isiro (Congo - Kinshasa), Nansana (Uganda))
What does “best time” mean for Yei, Central Equatoria, South Sudan?
It means the lowest deterministic score among complete practical two-hour windows returned for Yei, Central Equatoria, South Sudan. It does not mean risk-free, and when conditions are similarly poor AirAgora says so.%!(EXTRA string=Yei, Central Equatoria, South Sudan)
When was the Yei, Central Equatoria, South Sudan place record updated?
The GeoNames record carries the modification date Yei, Central Equatoria, South Sudan. Live air data has a separate provider update timestamp shown in the result card.%!(EXTRA string=January 10, 2022)
Sources, modification, and limits
Place name, administrative area, coordinates, timezone, population, elevation/DEM, feature code, and modification date come from GeoNames under CC BY 4.0. The GeoNames record used here was last modified on January 10, 2022. Live modeled air-pollution fields come from OpenWeather with visible attribution. AirAgora preserves the provider 1–5 category and separately derives, caches, and scores component severity.
