What is the air quality trend in Adelphi?

Over the past 8 days, Adelphi had an average AQI of 77 based on station measurements. The worst day was 2026-07-17 with AQI 167.

How is Adelphi air quality measured?

Air quality in Adelphi 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 Adelphi, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Adelphi, 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 · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	22	18–26	5.3 µg/m³	4h	24
2026-07-21	52	27–74	14.3 µg/m³	24h	30
2026-07-20	68	58–79	20.4 µg/m³	24h	29
2026-07-19	66	36–158	20.3 µg/m³	24h	31
2026-07-18	131	57–161	51.0 µg/m³	24h	31
2026-07-17	167	71–221	97.9 µg/m³	24h	33
2026-07-16	66	54–155	19.4 µg/m³	24h	31
2026-07-15	49	24–58	12.2 µg/m³	20h	32

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