Ans vs Riemst: PM2.5 compared
Ans and Riemst were both measured on only one day over the last year, too few to compare them (it takes 30).
Right now
Ans#2,471on the 24-hour board of 2,540, at 8 US AQI (1.4 µg/m³)
Riemst#2,124on the 24-hour board of 2,540, at 17 US AQI (3.0 µg/m³)
Compare either city with another
Ans
Side by side with Liège (the nearest), Meulebeke (Belgium's worst on 30 days), Gujranwala (the world's worst on 30 days).
Riemst
Side by side with Meulebeke (Belgium's worst on 30 days), Gujranwala (the world's worst on 30 days).
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-13 01:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence).