Road & rail noise map for Slough
Town in Slough, South East
We analysed 2,919 postcodes in and around Slough, Slough against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (850) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 68% 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 SL3 7FU.
Noise map of Slough
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 | 22% (634) | 6% (185) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 5% (147) | 4% (123) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 2% (67) | <1% (25) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (2) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 71% | 89% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 1% (30) | 1% (33) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 1% (36) | <1% (29) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (19) | <1% (8) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (3) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 97% | 98% |
Share of the 2,919 postcodes within ~5 km of the Slough centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Slough
Check a specific postcode
Example searches: SL1 1DJ · SL1 3SR · SL1 1EE · SL1 1AG · SL1 0SB · SL1 1DY
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.
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Nearby areas
Frequently asked questions
- How noisy is Slough?
- We analysed 2,919 postcodes in and around Slough, Slough against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (850) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 68% 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 SL3 7FU.
- Where is the most road noise in Slough?
- The postcodes with the highest modelled daytime levels in and around Slough are SL3 7FU, SL1 3TD, SL1 3SR, based on DEFRA's 2022 model of major roads and railways.