PM2.5 observation snapshot
2.4 µg/m³ · 3 sensors
Prepared:
Values refer to the stated observation times. Open the map for the latest readings.
Open mapSaint Petersburg Air Quality — PM2.5 & Sensors
Russia
Sensors and observation times
| Sensor | PM2.5 (µg/m³) | UTC |
|---|---|---|
| 19 k1 Nauka Ave. | 1.0 | |
| SC #50072 | 4.9 | |
| SC #35917 | 1.1 |
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