World air quality (AQI) ranking
World air quality (AQI) ranking
Your questions answered, on IQAir's 2018 World Air Quality Report
17 articles
Written by Chloe
Changelog: 2018 World Air Quality Report
Written by Chloe. Updated over a week ago
Air quality ranking disclaimer
Written by Chloe. Updated over a week ago
Why are the WHO Air Quality Guidelines used when different countries have different ambient air quality requirement?
Written by Chloe. Updated over a week ago
What are some of the major sources or causes of ambient air pollution?
Written by Chloe. Updated over a week ago
Since data measured by AirVisual monitors are used in the ranking, how accurate are AirVisual data?
Written by Chloe. Updated over a week ago
Why is the US Air Quality Index used in the ranking?
Written by Chloe. Updated over a week ago
How precise is the ranking?
Written by Chloe. Updated over a week ago
How is historical data being incorporated in the ranking dataset?
Written by Chloe. Updated over a week ago
Is missing data from stations common? How is the missing data treated in this ranking and which countries have bad data quality?
Written by Chloe. Updated over a week ago
What is the data availability rule in the ranking?
Written by Chloe. Updated over a week ago
How is the ranking air quality data collected, processed and calculated?
Written by Chloe. Updated over a week ago
What are the steps taken to ensure the quality of data of the ranking?
Written by Chloe. Updated over a week ago
What are the data sources for this air quality ranking?
Written by Chloe. Updated over a week ago
How are the yearly PM2.5 yearly measurements for country/region calculated?
Written by Chloe. Updated over a week ago
Why is PM2.5 chosen for this ranking?
Written by Chloe. Updated over a week ago
Why is the air quality ranking data different from governmental/official data?
Written by Chloe. Updated over a week ago
Why are some cities and countries not listed in this air quality ranking?
Written by Chloe. Updated over a week ago