5 day forecast

The table below shows a summary of the air pollution forecast for up to 5 days ahead.

Forecast for Lewisham

  • Thu 18th Sep

    3
    Low

  • Fri 19th Sep

    2
    Low

  • Sat 20th Sep

    2
    Low

  • Sun 21st Sep

    2
    Low

  • Mon 22nd Sep

    Unavailable
Last updated 18/09/2025 06:00

Air pollution forecasts are produced by the Met Office. You can find more detailed forecast information for England on the Defra UK-AIR website.

Low
1
2
3
Mid
4
5
6
High
7
8
9
Very High
10

The air pollution categories and indices by air pollutant

Low Medium High Very High
1 2 3 4 5 6 7 8 9 10
Nitrogen Dioxide (NO2) (Based on the hourly mean concentration)
0-67 68-134 135-200 201-267 268-334 355-400 401-467 468-534 555-600 601+
Ozone (O3) (Based on the running 8-hourly mean)
0-33 34-66 67-100 101-120 121-140 141-160 161-187 188-213 214-240 241+
Particles (PM10) (Based on latest 24 hour running mean for the current day)
0-16 17-33 34-50 51-58 59-66 67-75 76-83 84-91 92-100 101+
Particles (PM10) (Based on latest 24 hour running mean for the current day)
0-11 12-23 24-35 36-41 42-47 48-53 54-58 59-64 65-70 71+