What is the air quality trend in Piscataway?

Over the past 8 days, Piscataway had an average AQI of 70 based on station measurements. The worst day was 2026-07-17 with AQI 120.

How is Piscataway air quality measured?

Air quality in Piscataway 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 Piscataway, United States

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

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

Current AQI
Good 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	Hours	Stations
2026-07-21	50	38–81	12.6 µg/m³	22h	14
2026-07-20	46	29–71	11.3 µg/m³	24h	14
2026-07-19	54	38–75	14.2 µg/m³	24h	14
2026-07-18	97	52–138	33.4 µg/m³	24h	14
2026-07-17	120	65–191	49.5 µg/m³	24h	16
2026-07-16	101	57–174	37.8 µg/m³	24h	14
2026-07-15	59	38–96	16.6 µg/m³	24h	15
2026-07-14	38	33–44	9.3 µg/m³	2h	11

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