What is the air quality trend in Middleborough?

Over the past 14 days, Middleborough had an average AQI of 31 based on station measurements. The worst day was 2026-05-19 with AQI 52.

How is Middleborough air quality measured?

Air quality in Middleborough is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Middleborough, United States

Name: Middleborough Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Middleborough, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	26	18–42	6.2 µg/m³	23h	5
2026-05-28	26	16–48	6.3 µg/m³	24h	6
2026-05-27	31	23–54	7.4 µg/m³	24h	6
2026-05-26	28	18–45	6.7 µg/m³	24h	6
2026-05-25	26	15–39	6.1 µg/m³	24h	6
2026-05-24	26	18–47	6.3 µg/m³	24h	6
2026-05-23	23	18–32	5.6 µg/m³	24h	6
2026-05-22	23	15–35	5.5 µg/m³	24h	6
2026-05-21	26	19–40	6.1 µg/m³	24h	6
2026-05-20	43	23–62	10.4 µg/m³	24h	6
2026-05-19	52	40–117	13.4 µg/m³	24h	6
2026-05-18	41	34–52	10.0 µg/m³	24h	5
2026-05-17	40	25–55	9.5 µg/m³	24h	5
2026-05-16	31	19–45	7.4 µg/m³	24h	6

Back to Middleborough Air Quality