What is the air quality trend in Scotch Plains?

Over the past 21 days, Scotch Plains had an average AQI of 29 based on station measurements. The worst day was 2026-09-01 with AQI 42.

How is Scotch Plains air quality measured?

Air quality in Scotch Plains 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 Scotch Plains, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

478h

PM2.5 Station

478h · 9 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-06	22	13–28	5.1 µg/m³	19h	13
2026-09-05	24	17–34	5.6 µg/m³	24h	16
2026-09-04	27	21–32	6.4 µg/m³	24h	15
2026-09-03	26	17–35	6.3 µg/m³	24h	15
2026-09-02	28	21–42	6.6 µg/m³	24h	15
2026-09-01	42	26–68	10.6 µg/m³	24h	15
2026-08-31	33	26–45	7.9 µg/m³	24h	14
2026-08-30	30	22–42	7.2 µg/m³	24h	15
2026-08-29	27	15–38	6.4 µg/m³	24h	14
2026-08-28	34	24–46	8.0 µg/m³	24h	17
2026-08-27	29	23–37	7.1 µg/m³	24h	16
2026-08-26	24	15–39	5.8 µg/m³	24h	16
2026-08-25	25	19–37	6.1 µg/m³	24h	16
2026-08-24	31	20–42	7.4 µg/m³	24h	16
2026-08-23	30	18–53	7.1 µg/m³	24h	14
2026-08-22	34	27–77	8.5 µg/m³	24h	14
2026-08-21	34	27–52	8.1 µg/m³	24h	15
2026-08-20	38	26–49	9.1 µg/m³	24h	14
2026-08-19	29	21–41	7.0 µg/m³	24h	14
2026-08-18	26	18–31	6.2 µg/m³	24h	14
2026-08-17	24	23–26	5.8 µg/m³	3h	11

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