PM2.5 observation snapshot
1.6 µg/m³ · 4 sensors
Prepared:
Values refer to the stated observation times. Open the map for the latest readings.
Open mapPrague Air Quality — PM2.5 & Sensors
Czechia
Sensors and observation times
| Sensor | PM2.5 (µg/m³) | UTC |
|---|---|---|
| Kalabisova | 0.0 | |
| Bechovice | 2.8 | |
| Raškova, Řeporyje | 0.0 | |
| Prague, Stodůlky | 3.7 |
Methodology and limitations
The value is the arithmetic mean of the latest available individual sensor observations, each at most one hour old when the snapshot was prepared. It is neither a 24-hour average nor an AQI index.
Duplicate sensor records do not increase their weight. Missing, negative and PM2.5 readings above 500 µg/m³ are excluded under the Atmy quality rule. Pilot cities require at least three qualifying sensors. Sensor count does not guarantee uniform coverage or laboratory accuracy.
Source: public Atmy monitoring data. Data terms