What is the air quality trend in Logan?

Over the past 20 days, Logan had an average AQI of 44 based on station measurements. The worst day was 2026-05-10 with AQI 52.

How is Logan air quality measured?

Air quality in Logan 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 Logan, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

451h

PM2.5 Station

451h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	44	11–117	11.8 µg/m³	19h	2
2026-05-28	42	21–160	11.9 µg/m³	22h	3
2026-05-27	45	21–85	11.5 µg/m³	24h	2
2026-05-26	40	18–78	10.1 µg/m³	24h	2
2026-05-25	46	12–193	15.8 µg/m³	21h	2
2026-05-24	32	16–64	7.8 µg/m³	21h	2
2026-05-23	40	15–114	10.8 µg/m³	24h	2
2026-05-22	43	22–84	11.0 µg/m³	24h	2
2026-05-21	44	18–169	13.6 µg/m³	24h	2
2026-05-20	45	22–62	11.2 µg/m³	24h	2
2026-05-19	48	25–71	12.6 µg/m³	24h	3
2026-05-18	42	18–91	10.8 µg/m³	24h	2
2026-05-17	39	16–63	9.8 µg/m³	23h	2
2026-05-16	52	20–109	14.2 µg/m³	20h	2
2026-05-15	52	17–95	14.5 µg/m³	23h	2
2026-05-14	50	8–75	13.4 µg/m³	19h	2
2026-05-13	43	16–81	11.4 µg/m³	23h	2
2026-05-12	52	20–188	17.1 µg/m³	23h	2
2026-05-11	43	20–65	10.7 µg/m³	21h	2
2026-05-10	52	9–79	14.3 µg/m³	24h	2

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