PM2.5 observation snapshot
4.9 µg/m³ · 44 sensors
Prepared:
Values refer to the stated observation times. Open the map for the latest readings.
Open mapHeidelberg Air Quality — PM2.5 & Sensors
Germany
Sensors and observation times
| Sensor | PM2.5 (µg/m³) | UTC |
|---|---|---|
| SC #88926 | 9.0 | |
| SC #85953 | 5.6 | |
| SC #55224 | 2.6 | |
| SC #25559 | 2.8 | |
| SC #37071 | 1.0 | |
| SC #1106 | 4.4 | |
| SC #33443 | 6.6 | |
| SC #32611 | 37.5 | |
| SC #24485 | 4.2 | |
| SC #7719 | 4.3 | |
| SC #2049 | 5.8 | |
| SC #78903 | 0.7 | |
| SC #76377 | 7.5 | |
| SC #25479 | 5.0 | |
| SC #10416 | 4.1 | |
| SC #100028 | 6.4 | |
| SC #52047 | 2.7 | |
| SC #32715 | 4.1 | |
| SC #23561 | 3.7 | |
| SC #19735 | 2.4 | |
| SC #65035 | 10.2 | |
| SC #94971 | 3.3 | |
| SC #28702 | 3.5 | |
| SC #10059 | 4.8 | |
| SC #9722 | 5.2 | |
| SC #5801 | 0.6 | |
| SC #95844 | 3.4 | |
| SC #5553 | 2.3 | |
| SC #83761 | 2.9 | |
| SC #13977 | 3.0 | |
| SC #97322 | 3.4 | |
| SC #24216 | 7.2 | |
| SC #81133 | 10.1 | |
| SC #18711 | 3.2 | |
| SC #46328 | 1.0 | |
| SC #44456 | 5.5 | |
| SC #97612 | 3.9 | |
| SC #94718 | 1.9 | |
| SC #85056 | 3.7 | |
| SC #7807 | 5.0 | |
| SC #38715 | 1.4 | |
| SC #85917 | 3.1 | |
| SC #74894 | 4.5 | |
| SC #78887 | 0.0 |
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