PM2.5 observation snapshot
1.3 µg/m³ · 53 sensors
Prepared:
Values refer to the stated observation times. Open the map for the latest readings.
Open mapFreiburg im Breisgau Air Quality — PM2.5 & Sensors
Germany
Sensors and observation times
| Sensor | PM2.5 (µg/m³) | UTC |
|---|---|---|
| SC #2546 | 0.6 | |
| SC #42970 | 35.4 | |
| SC #47365 | 0.5 | |
| SC #75090 | 0.7 | |
| SC #2388 | 0.3 | |
| Emmendingen | 0.0 | |
| SC #90898 | 0.4 | |
| SC #39738 | 0.4 | |
| SC #49235 | 4.2 | |
| SC #76176 | 2.6 | |
| SC #16543 | 0.5 | |
| SC #43700 | 0.7 | |
| SC #52248 | 0.6 | |
| SC #13891 | 0.8 | |
| SC #2602 | 0.8 | |
| SC #9280 | 0.2 | |
| SC #73382 | 0.6 | |
| SC #9698 | 0.6 | |
| SC #16640 | 0.5 | |
| SC #2564 | 0.8 | |
| SC #39360 | 0.4 | |
| SC #27744 | 0.5 | |
| SC #10303 | 0.4 | |
| SC #2438 | 0.9 | |
| SC #72205 | 0.5 | |
| SC #1751 | 0.3 | |
| SC #21032 | 0.5 | |
| SC #3527 | 2.5 | |
| SC #37971 | 0.2 | |
| SC #17422 | 0.6 | |
| SC #34928 | 0.7 | |
| SC #93661 | 0.3 | |
| SC #7359 | 0.4 | |
| SC #24999 | 0.6 | |
| SC #90040 | 0.9 | |
| SC #21860 | 0.3 | |
| SC #21721 | 0.5 | |
| SC #60710 | 0.4 | |
| SC #20725 | 0.5 | |
| SC #99731 | 0.4 | |
| SC #4206 | 1.1 | |
| SC #2408 | 0.6 | |
| SC #99282 | 0.6 | |
| SC #5147 | 0.0 | |
| SC #38843 | 0.5 | |
| SC #84606 | 1.2 | |
| SC #2289 | 0.2 | |
| SC #2001 | 0.5 | |
| SC #2452 | 1.3 | |
| SC #54837 | 0.3 | |
| SC #12846 | 0.4 | |
| SC #17306 | 0.5 | |
| SC #36991 | 0.6 |
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