SmogRank / United Kingdom / England / Doncaster

Doncaster, month by month

Doncaster has a measured daily mean on 330 days since 30 March 2025. Its worst month was March 2026, at 56 US AQI (11.9 µg/m³), 1,234th of 2,971 cities on that month's world ranking. Its cleanest was September 2025, at 31 US AQI (5.6 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 199)95 days measured
Jan54#995Feb53#1,328Mar56#1,234AprnoneMaynoneJunnoneJulnoneAugnoneSep1 dayOct25#2,322
2025too few days for a mean (a year needs 256)235 days measured
JanFebMar2 daysApr53#1,145May45#1,320Jun37#2,078Jul35#2,207Aug40#2,101Sep31#2,285Oct49#706Nov12 daysDec43#1,902
Each square is a month's mean PM2.5 in US AQI from Doncaster'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 Doncaster 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

8 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.
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.

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

Doncaster's worst months

MonthUS AQIDays measuredWorld rankEpisode
March 2026 5611.9 µg/m³24 of 311,234thof 2,971Europe, 1 to 12 March 2026
January 2026 5410.9 µg/m³31 of 31995thof 2,617Europe, January and February 2026
February 2026 5310.3 µg/m³28 of 281,328thof 2,866Europe, January and February 2026
April 2025 5310.1 µg/m³28 of 301,145thof 2,951–
October 2025 498.8 µg/m³22 of 31706thof 2,614–
May 2025 458.1 µg/m³29 of 311,320thof 2,826–

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.

Doncaster's worst days

DayUS AQIEpisode
5 Mar 2026 9633.4 µg/m³Europe, 1 to 12 March 2026
9 Mar 2026 9633.3 µg/m³Europe, 1 to 12 March 2026
26 Jan 2026 9331.4 µg/m³Europe, January and February 2026
3 Feb 2026 8829.0 µg/m³Europe, January and February 2026
4 Feb 2026 8326.2 µg/m³Europe, January and February 2026
19 Jan 2026 7924.3 µg/m³Europe, January and February 2026
21 Mar 2026 7823.8 µg/m³–
6 Mar 2026 7823.5 µg/m³Europe, 1 to 12 March 2026
20 Mar 2026 7722.9 µg/m³–
27 Jan 2026 7522.0 µg/m³Europe, January and February 2026

Daily means, the highest since 30 Mar 2025; 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, Doncaster, United Kingdom, 30 Mar 2025 – 11 Oct 2026. Monitor data from UK-AIR (Defra), read from the publisher; sources listed at smogrank.com/sources. smogrank.com/gb/doncaster/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.

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

Updated 2026-10-12 19:07 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).