SmogRank / United Kingdom / England / Gillingham

Gillingham, month by month

Gillingham has a measured daily mean on 673 days since 11 May 2023. Its worst month was April 2025, at 56 US AQI (12.0 µg/m³), 763rd of 2,951 cities on that month's world ranking. Its cleanest was August 2023, at 17 US AQI (3.0 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)85 days measured
Jan47#1,358Feb36#2,357Mar20 daysAprnoneMaynoneJunnoneJulnoneAugnoneSep1 dayOct24#2,386
2025too few days for a mean (a year needs 256)204 days measured
JannoneFebnoneMar2 daysApr56#763May38#1,671Jun27#2,306Jul23#2,741Aug28#2,682Sep12 daysOct21 daysNov12 daysDec42#1,994
2024too few days for a mean (a year needs 257)240 days measured
Jan39#1,518Feb24#2,258Mar20 daysApr19 daysMay46#1,238Jun33#2,051Jul24#2,398Aug37#1,615Sep43#934Oct20 daysNovnoneDecnone
2023too few days for a mean (a year needs 256)144 days measured
JanFebMarAprMay12 daysJun17 daysJul18 daysAug17#1,970Sep8 daysOct16 daysNov29#1,931Dec27#2,033
Each square is a month's mean PM2.5 in US AQI from Gillingham's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Gillingham marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

23 months
MonthWhy
Sep 20261 of 30 days measured; a month needs 21. The others: 29 with under 18 hours of readings or readings that failed our checks.
Aug 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 202620 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Nov 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Oct 202521 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Sep 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Mar 20252 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 202420 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Apr 202419 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Mar 202420 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Oct 202316 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Sep 20238 of 30 days measured; a month needs 21. The others: 22 with under 18 hours of readings or readings that failed our checks.
Jul 202318 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 12 with under 18 hours of readings or readings that failed our checks.
Jun 202317 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks.
May 202312 of 31 days measured; a month needs 22. The others: 9 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Gillingham's worst months

MonthUS AQIDays measuredWorld rankEpisode
April 2025 5612.0 µg/m³27 of 30763rdof 2,951United Kingdom, Belgium and 2 more countries, April 2025
United Kingdom and France, April 2025
January 2026 478.5 µg/m³31 of 311,358thof 2,617Europe, January and February 2026
May 2024 468.2 µg/m³29 of 311,238thof 2,684–
September 2024 437.7 µg/m³28 of 30934thof 2,010–
December 2025 427.5 µg/m³28 of 311,994thof 3,006–
January 2024 397.0 µg/m³23 of 311,518thof 2,385–

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Gillingham's worst days

DayUS AQIEpisode
9 Mar 2026 9331.5 µg/m³Europe, 1 to 12 March 2026
4 Apr 2025 9130.7 µg/m³United Kingdom and France, April 2025
1 May 2025 8929.7 µg/m³United Kingdom and The Netherlands, May 2025
5 Mar 2026 8728.3 µg/m³Europe, 1 to 12 March 2026
26 Jan 2026 8628.0 µg/m³Europe, January and February 2026
12 Apr 2025 8427.0 µg/m³United Kingdom, Belgium and 2 more countries, April 2025
24 Mar 2026 8426.8 µg/m³Europe, 18 to 25 March 2026
11 Mar 2024 8225.6 µg/m³United Kingdom and The Netherlands, March 2024
20 Mar 2026 8125.0 µg/m³Europe, 18 to 25 March 2026
7 Mar 2024 7723.2 µg/m³–

Daily means, the highest since 11 May 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Gillingham, United Kingdom, 11 May 2023 – 11 Oct 2026. Monitor data from UK-AIR (Defra), read from the publisher; sources listed at smogrank.com/sources. smogrank.com/gb/gillingham/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Gillingham now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).