The UK government has published November environmental monitoring for the Grenfell Tower site, covering 3 to 30 November 2025 and released on 17 December. Across noise, dust and vibration there were no red action alerts during the reporting period, indicating no breach of site action thresholds.
Noise levels were tracked at three points on the site hoarding. Under the site’s Noise and Vibration Management Plan for the current deconstruction phase (Sequence 2, reducing the tower from 67 metres to 35 metres), 1‑hour amber alerts were set at 75 dB LAeq at NMP1 and 74 dB at NMP2 and NMP3, with a 10‑hour red action level at 72 dB for NMP1 and 71 dB for NMP2/3. The November report records no amber or red exceedances during working hours at any of the three locations.
Dust was monitored for PM10 and PM2.5 at five boundary points. The Air Quality & Dust Management Plan sets 15‑minute amber triggers at 150 µg/m³ for PM10 and 54 µg/m³ for PM2.5, with 1‑hour red action levels at 190 µg/m³ (PM10) and 70 µg/m³ (PM2.5). Nine amber PM2.5 spikes occurred at DMP2, all outside site working hours, and there were no 1‑hour red exceedances for PM10 or PM2.5 at any location.
The dust contractor attributes the short PM2.5 spikes to fog and very high humidity rather than site activity. Light‑scattering sensors can read elevated fine particles in stagnant, moist air because droplets cause ‘hygroscopic growth’ and enhanced scattering; the pattern was seen across multiple monitors simultaneously.
Ground vibration was measured at three positions. Trigger levels differ by receptor type: at the residential point (VMP1) the amber threshold was 1.0 mm/s peak particle velocity and the red action level 3.0 mm/s; at the commercial points (VMP2 and VMP3) amber was 3.0 mm/s and red 5.0 mm/s. November saw four amber events at VMP1 and two at VMP2, typically linked to scaffolding lorry or 40‑ton skip movements. No red exceedances were recorded at any location.
For residents and nearby institutions, these results indicate compliance with the site’s management plans during November. Amber alerts are operational warnings for the contractor to review methods; they do not require work to stop. Red alerts trigger investigation and mitigation measures under the plan. No such action was required in this period.
Monitoring locations and instrumentation are detailed in the reports. Noise was recorded by Class 1 monitors at three hoarding points; dust by five MCERTS‑approved particulate monitors positioned around the site boundary near homes, the academy and leisure facilities; vibration by DIN 45669‑2 compliant systems with telemetry for real‑time alerts.
The publishing department has provided the three documents for public access and notes that translations are available on request by email. Residents and local stakeholders can use these monthly releases to track whether deconstruction works remain within agreed environmental limits.