What is the air quality trend in Uniondale?

Over the past 8 days, Uniondale had an average AQI of 84 based on station measurements. The worst day was 2026-07-17 with AQI 119.

How is Uniondale air quality measured?

Air quality in Uniondale 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 Uniondale, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Uniondale, 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	PM10 avg	Hours	Stations
2026-07-22	40	18–63	10.5 µg/m³	112.0	6h	6
2026-07-21	59	29–83	16.7 µg/m³	120.0	24h	6
2026-07-20	58	24–91	17.1 µg/m³	149.0	24h	6
2026-07-19	72	42–112	22.4 µg/m³	102.8	24h	6
2026-07-18	114	77–155	41.5 µg/m³	125.2	24h	6
2026-07-17	119	58–179	48.9 µg/m³	122.2	24h	6
2026-07-16	109	70–184	43.3 µg/m³	138.1	24h	5
2026-07-15	105	33–168	41.6 µg/m³	107.7	18h	4

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