SmogRank / United Kingdom / England / Speke

Speke, month by month

Speke has a measured daily mean on 769 days since 1 January 2023. Its worst month was March 2026, at 53 US AQI (10.2 µg/m³), 1,620th of 2,971 cities on that month's world ranking. Its cleanest was February 2024, at 28 US AQI (5.1 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)85 days measured
Jan41#1,675Feb38#2,282Mar53#1,620AprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOct22#2,539
2025too few days for a mean (a year needs 256)236 days measured
JannoneFebnoneMar2 daysApr53#1,145May51#1,031Jun44#1,834Jul47#1,676Aug47#1,674Sep36#1,887Oct49#706Nov12 daysDec36#2,309
2024too few days for a mean (a year needs 257)234 days measured
Jan21 daysFeb28#2,109Mar20 daysApr19 daysMay51#935Jun13 daysJul34#1,925Aug31#1,824Sep37#1,294Oct50#634NovnoneDecnone
2023too few days for a mean (a year needs 256)214 days measured
Jan41#813Feb2 daysMar10 daysApr48#671May18 daysJun17 daysJul16 daysAug30#1,766Sep14 daysOct16 daysNov32#1,805Dec31#1,909
Each square is a month's mean PM2.5 in US AQI from Speke'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 Speke 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 2026No day measured. The others: 30 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.
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.
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.
Jun 202413 of 30 days measured; a month needs 21. The others: 17 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.
Jan 202421 of 31 days measured; a month needs 22. The others: 10 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 202314 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Jul 202316 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 14 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 202318 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Mar 202310 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks.
Feb 20232 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 1 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.

Speke's worst months

MonthUS AQIDays measuredWorld rankEpisode
March 2026 5310.2 µg/m³26 of 311,620thof 2,971Europe, 18 to 25 March 2026
April 2025 5310.1 µg/m³28 of 301,145thof 2,951–
May 2025 519.3 µg/m³29 of 311,031stof 2,826United Kingdom and The Netherlands, May 2025
May 2024 519.2 µg/m³27 of 31935thof 2,684–
October 2024 509.0 µg/m³26 of 31634thof 2,020–
October 2025 498.8 µg/m³24 of 31706thof 2,614–

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.

Speke's worst days

DayUS AQIEpisode
21 Mar 2026 10436.9 µg/m³Europe, 18 to 25 March 2026
9 Sept 2023 9130.6 µg/m³United Kingdom, Belgium and 2 more countries, September 2023
8 Sept 2023 9029.8 µg/m³United Kingdom, Belgium and 2 more countries, September 2023
1 May 2025 8527.4 µg/m³United Kingdom and The Netherlands, May 2025
24 Jan 2023 8326.5 µg/m³France, The Netherlands and United Kingdom, January 2023
25 Jul 2025 8125.4 µg/m³–
14 Feb 2023 8125.0 µg/m³Europe, 6 to 25 February 2023
5 Mar 2026 8024.8 µg/m³–
24 Jul 2025 7923.9 µg/m³–
20 Mar 2026 7522.2 µg/m³Europe, 18 to 25 March 2026

Daily means, the highest since 1 Jan 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, Speke, United Kingdom, 1 Jan 2023 – 11 Oct 2026. Monitor data from UK-AIR (Defra), read from the publisher; sources listed at smogrank.com/sources. smogrank.com/gb/speke/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.

Speke 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).