What is the air quality trend in Trenton?

Over the past 8 days, Trenton had an average AQI of 91 based on station measurements. The worst day was 2026-07-17 with AQI 181.

How is Trenton air quality measured?

Air quality in Trenton 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 Trenton, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 7 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	56	45–66	14.8 µg/m³	23.7	22h	79
2026-07-20	48	30–75	12.4 µg/m³	13.1	24h	80
2026-07-19	57	27–73	16.1 µg/m³	26.2	24h	83
2026-07-18	140	63–166	60.7 µg/m³	95.6	24h	83
2026-07-17	181	157–227	110.2 µg/m³	143.8	24h	88
2026-07-16	139	51–170	55.0 µg/m³	96.1	24h	79
2026-07-15	58	53–88	15.6 µg/m³	23.1	24h	83
2026-07-14	55	55–55	13.8 µg/m³	22.1	2h	90

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