SmogRank / United States / Massachusetts / Springfield
Springfield, month by month
Springfield, Massachusetts has a measured daily mean on 1,350 days since 1 January 2023. Its worst month was June 2023, at 57 US AQI (12.3 µg/m³), 531st of 1,603 cities on that month's world ranking. Its cleanest was March 2024, at 22 US AQI (4.0 µg/m³). 2025 averaged 38 US AQI (6.8 µg/m³), against 33 US AQI (6.0 µg/m³) in 2024.
Every month since 2023
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
Springfield's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| June 2023 | 5712.3 µg/m³ | 531stof 1,603 | Eastern United States and Canada, June and July 2023 Eastern United States and Canada, May and June 2023 |
| July 2023 | 5611.7 µg/m³ | 437thof 1,432 | United States and Canada, July 2023 Eastern United States and Canada, June and July 2023 |
| July 2026 | 5611.6 µg/m³ | 974thof 2,784 | Northern United States and Canada, July 2026 |
| June 2025 | 5410.9 µg/m³ | 1,044thof 2,508 | Northern United States and Canada, May and June 2025 |
| August 2025 | 5310.4 µg/m³ | 1,150thof 2,901 | North-eastern United States and Canada, 29 July to 9 August 2025 |
| April 2023 | 5310.2 µg/m³ | 419thof 1,622 | – |
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.
Springfield's worst days
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, Springfield, Massachusetts, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/springfield-massachusetts/history (accessed 12 Oct 2026).
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.
Springfield 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).