Road & rail noise map for Westerham
Town in Kent, South East
We analysed 463 postcodes in and around Westerham, Kent against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (135) have mapped road noise of 55 dB or more by day, and 0% have mapped rail noise. 71% of postcodes have no mapped road or rail noise at all — though that reflects major-source modelling, not guaranteed quiet. The highest modelled level we found is at TN16 1JN (road noise 65.0–69.9 dB by day).
Noise map of Westerham
How many postcodes are affected?
Road noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 18% (84) | 8% (36) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (35) | 6% (29) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 3% (16) | 2% (11) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 0% (0) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 71% | 84% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 0% (0) | 0% (0) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 0% (0) | 0% (0) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 0% (0) | 0% (0) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 0% (0) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 100% | 100% |
Share of the 463 postcodes within ~5 km of the Westerham centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Westerham
Check a specific postcode
Example searches: TN16 1AH · TN16 1AQ · TN14 6ES · TN14 6EH · TN14 6EL · TN16 1AT
What this data does — and doesn't — cover
- Modelled, not measured.These are DEFRA's computer-modelled estimates (Round 4, 2022), not microphone readings at your door.
- Major sources only. The model covers major roads, major railways and large urban areas. Smaller local roads, neighbours, pubs, building sites and aircraft are not included.
- No mapped noise ≠ quiet. If a location shows no band, it means it falls outside the mapped contours — not that it is silent.
- 2022 snapshot.New roads, developments or traffic changes since 2022 won't show. The next DEFRA round is due around 2027.
More detail on the methodology page.
Bothered by road or rail noise at home?
Acoustic and secondary glazing typically cuts perceived traffic noise dramatically. We're building a free quote-matching service with vetted installers — leave your email and we'll contact you when it launches.
Nearby areas
Frequently asked questions
- How noisy is Westerham?
- We analysed 463 postcodes in and around Westerham, Kent against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (135) have mapped road noise of 55 dB or more by day, and 0% have mapped rail noise. 71% of postcodes have no mapped road or rail noise at all — though that reflects major-source modelling, not guaranteed quiet. The highest modelled level we found is at TN16 1JN (road noise 65.0–69.9 dB by day).
- Where is the most road noise in Westerham?
- The postcodes with the highest modelled daytime levels in and around Westerham are TN16 1JN, TN16 1HR, TN16 1FA, based on DEFRA's 2022 model of major roads and railways.