What is the air quality trend in Holtsville?

Over the past 15 days, Holtsville had an average AQI of 56 based on station measurements. The worst day was 2026-07-17 with AQI 158.

How is Holtsville air quality measured?

Air quality in Holtsville 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 Holtsville, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

172h

PM2.5 Station

172h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	58	22–107	17.6 µg/m³	7h	1
2026-07-21	56	31–97	15.6 µg/m³	9h	1
2026-07-20	65	23–125	20.1 µg/m³	5h	1
2026-07-19	50	25–130	14.6 µg/m³	7h	1
2026-07-18	69	25–194	30.7 µg/m³	10h	1
2026-07-17	158	38–500	123.5 µg/m³	14h	1
2026-07-16	53	26–176	17.3 µg/m³	15h	1
2026-07-15	47	22–55	11.4 µg/m³	14h	1
2026-07-14	49	18–65	12.6 µg/m³	17h	1
2026-07-13	47	28–68	12.2 µg/m³	14h	1
2026-07-12	38	25–59	9.4 µg/m³	12h	1
2026-07-11	34	17–61	8.5 µg/m³	10h	1
2026-07-10	37	22–69	9.1 µg/m³	15h	1
2026-07-09	41	19–56	10.0 µg/m³	16h	1
2026-07-08	43	23–59	10.7 µg/m³	7h	1

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