What is the air quality trend in Lutherville-Timonium?

Over the past 8 days, Lutherville-Timonium had an average AQI of 68 based on station measurements. The worst day was 2026-07-17 with AQI 139.

How is Lutherville-Timonium air quality measured?

Air quality in Lutherville-Timonium 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 Lutherville-Timonium, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Lutherville-Timonium, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	35	20–53	8.5 µg/m³	4h	4
2026-07-21	50	28–73	13.0 µg/m³	24h	3
2026-07-20	54	33–76	14.4 µg/m³	24h	3
2026-07-19	54	28–89	14.9 µg/m³	24h	2
2026-07-18	99	48–155	34.6 µg/m³	23h	2
2026-07-17	139	56–230	67.6 µg/m³	24h	3
2026-07-16	72	37–272	27.1 µg/m³	24h	3
2026-07-15	47	28–99	12.1 µg/m³	19h	3

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