What is the air quality trend in Marlboro?

Over the past 15 days, Marlboro had an average AQI of 49 based on station measurements. The worst day was 2026-10-14 with AQI 59.

How is Marlboro air quality measured?

Air quality in Marlboro 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 Marlboro, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 8 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	48	20–93	14.7 µg/m³	149.0	3h	6
2026-10-20	46	15–70	12.2 µg/m³	143.8	24h	7
2026-10-19	48	16–80	13.7 µg/m³	138.6	24h	6
2026-10-18	52	7–127	15.1 µg/m³	143.8	24h	5
2026-10-17	45	14–127	12.6 µg/m³	149.0	24h	6
2026-10-16	49	16–93	14.2 µg/m³	129.5	24h	5
2026-10-15	54	16–127	16.1 µg/m³	139.0	24h	5
2026-10-14	59	20–127	17.4 µg/m³	102.1	24h	6
2026-10-13	54	16–96	16.0 µg/m³	129.5	24h	5
2026-10-12	53	16–127	15.4 µg/m³	149.0	24h	5
2026-10-11	49	17–91	13.7 µg/m³	149.0	24h	6
2026-10-10	51	15–98	14.7 µg/m³	143.7	24h	5
2026-10-09	52	19–96	14.7 µg/m³	123.0	23h	6
2026-10-08	52	10–127	14.9 µg/m³	134.3	24h	6
2026-10-07	33	20–71	8.5 µg/m³	106.1	19h	5

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