What is the air quality trend in Woburn?

Over the past 15 days, Woburn had an average AQI of 56 based on station measurements. The worst day was 2026-05-21 with AQI 76.

How is Woburn air quality measured?

Air quality in Woburn 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 Woburn, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Woburn, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 10 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	55	26–151	16.5 µg/m³	2.2	6h	9
2026-05-29	47	15–110	12.9 µg/m³	12.1	24h	12
2026-05-28	45	18–176	14.4 µg/m³	1.6	24h	11
2026-05-27	54	21–93	15.3 µg/m³	6.1	24h	12
2026-05-26	50	18–126	14.2 µg/m³	6.0	24h	10
2026-05-25	63	28–171	20.1 µg/m³	11.2	24h	12
2026-05-24	50	15–107	14.1 µg/m³	7.1	24h	12
2026-05-23	70	36–174	22.8 µg/m³	2.7	24h	14
2026-05-22	51	16–92	14.4 µg/m³	5.0	24h	11
2026-05-21	76	5–165	26.6 µg/m³	1.6	24h	14
2026-05-20	69	15–253	27.1 µg/m³	7.2	24h	12
2026-05-19	49	19–96	13.5 µg/m³	8.5	24h	11
2026-05-18	66	23–174	21.1 µg/m³	29.4	24h	10
2026-05-17	59	26–119	17.0 µg/m³	27.7	24h	6
2026-05-16	47	24–125	12.6 µg/m³	10.3	18h	12

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