What is the air quality trend in Highland Park?

Over the past 10 days, Highland Park had an average AQI of 14 based on station measurements. The worst day was 2026-05-25 with AQI 37.

How is Highland Park air quality measured?

Air quality in Highland Park 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 Highland Park, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

134h

PM2.5 Station

134h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	9	2–18	2.2 µg/m³	2.3	8h	1
2026-05-27	36	4–66	9.4 µg/m³	10.2	19h	1
2026-05-26	15	4–29	3.6 µg/m³	3.8	16h	1
2026-05-25	37	2–75	10.0 µg/m³	10.3	22h	1
2026-05-24	7	4–10	1.7 µg/m³	1.7	6h	1
2026-05-23	4	3–5	1.0 µg/m³	1.2	2h	1
2026-05-18	9	4–25	2.3 µg/m³	2.4	20h	1
2026-05-17	16	4–56	3.9 µg/m³	4.0	20h	1
2026-05-16	11	3–23	2.5 µg/m³	2.7	19h	1
2026-05-15	4	4–4	1.0 µg/m³	1.0	1h	1

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