Road & rail noise map for Leigh
Town in Wigan, North West
We analysed 1,391 postcodes in and around Leigh, Wigan against DEFRA's Strategic Noise Mapping (Round 4, 2022). 30% of them (414) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 70% 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 WN7 1SJ (road noise 70.0–74.9 dB by day).
Noise map of Leigh
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 | 17% (241) | 5% (76) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (113) | 7% (103) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 4% (58) | 2% (32) |
| 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 | 70% | 85% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | <1% (3) | <1% (3) |
| 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 1,391 postcodes within ~5 km of the Leigh centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Leigh
Check a specific postcode
Example searches: WN7 2AP · WN7 1SJ · WA3 5LG · WA3 5HS · WA3 5LD · WA3 1EL
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 Leigh?
- We analysed 1,391 postcodes in and around Leigh, Wigan against DEFRA's Strategic Noise Mapping (Round 4, 2022). 30% of them (414) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 70% 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 WN7 1SJ (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Leigh?
- The postcodes with the highest modelled daytime levels in and around Leigh are WN7 1SJ, WN7 2AP, WN7 5AH, based on DEFRA's 2022 model of major roads and railways.