Take care when spending time outdoors
Every reading is signed on the sensor, checked against its neighbours and backed by stake. Why that matters
Areas with nodes:
AQI
288
Poor
Live air in
BKC
116.4 µg/m³ PM2.5212.1 µg/m³ PM10
7.8× the WHO 24-hour PM2.5 guideline
Breathing discomfort for most people on prolonged exposure.
Median of 7 signed devices within 3 km (2 real · 5 simulated)2 flagged/slashed excludedcheckingupdated 7/11/2026, 02:03:00
Real devices reporting
2
+ 5 simulated · 8 active of 10
Signed readings accepted
2,855
0 since you opened this page
Flags raised
5
neighbour outliers
Stake securing data
0.02 ETH
2 devices slashed
Sensor map
Each circle is a device, placed in its 6-character geohash cell (no GPS is published). Simulated neighbours have a dashed ring. Click one for details.
Good
0–50
Satisfactory
51–100
Moderate
101–200
Poor
201–300
Very Poor
301–400
Severe
401–500
Loading map…
Live feed
readings · flags · slashesConnecting to relayer…
Areas, worst to best
Median of active devices within 3 km of each area centre.