Direct air-quality answer
Which air-quality scale does AirAgora use?
AirAgora uses OpenWeather’s official air-pollution scale from 1 to 5 for live results in every supported country. The provider value and category remain visible and are never labeled U.S. AQI, European AQI, or a local national index.
European AQI
70
Poor in this scheme
U.S. AQI
70
Moderate in this scheme
Same numeral, different rules
Short answer
AirAgora uses OpenWeather’s official air-pollution scale from 1 to 5 for live results in every supported country. The provider value and category remain visible and are never labeled U.S. AQI, European AQI, or a local national index.
AirAgora derives a separate continuous internal severity from OpenWeather’s documented pollutant concentration bands for ranking and main-pollutant selection. That internal value is not displayed as a synthetic AQI.
Why the provider scale keeps its own name
European AQI and U.S. AQI are distinct regulatory communication systems with their own breakpoints and labels. OpenWeather’s 1–5 air-pollution scale is another named provider scale.
Using the correct name prevents a provider category from being mistaken for an official local regulatory statement. Interface language changes translation, not the scale’s identity.
How AirAgora handles the question
The live card preserves the provider value from 1 to 5 and its official category. Pollutant concentrations remain visible with units.
The airagora-1.1.0 engine derives component severity continuously, applies the 70/30 two-hour rule, and records any mismatch between the provider category and the strongest derived component band.
What to check before comparing
Look for “OpenWeather air-pollution scale (1–5)” beside the value. Do not compare that numeral directly with European or U.S. AQI.
Use regulatory AQI pages as educational context and official local sources for public-health decisions.
- OpenWeather 1–5 stays labeled
- No U.S. or European AQI relabeling
- Component severity is internal
- Concentrations keep their units
- Mismatch is auditable
Direct answers
Frequently asked questions
Does the scale change by country?
No. The live provider scale remains OpenWeather 1–5 across supported countries.
Does changing language change the scale?
No. Locale translates labels and formatting; it does not change the provider scale.
Is OpenWeather 3 the same as U.S. AQI 3?
No. The systems use different ranges and meanings and should not be compared as one numeric axis.
Why derive internal severity?
Continuous pollutant-band severity lets AirAgora rank hours and identify a main pollutant without inventing a regulatory AQI.
Does AirAgora treat “Which air-quality scale does AirAgora use” as a personal guarantee?
AirAgora derives a separate continuous internal severity from OpenWeather’s documented pollutant concentration bands for ranking and main-pollutant selection. That internal value is not displayed as a synthetic AQI.
Evidence register
Sources and further reading
The links below identify the primary references used on this page. Selection, summary, and presentation are AirAgora modifications.
Keep exploring
AirAgora provides informational planning guidance, not medical advice. Local conditions can differ from modeled forecasts; follow official guidance during severe events.