What is the air quality trend in Vernon Hills?

Over the past 17 days, Vernon Hills had an average AQI of 15 based on station measurements. The worst day was 2026-07-19 with AQI 51.

How is Vernon Hills air quality measured?

Air quality in Vernon Hills 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 Vernon Hills, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

183h

PM2.5 Station

183h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-07	2	2–2	0.4 µg/m³	1.4	1h	1
2026-08-06	4	3–4	0.8 µg/m³	1.1	2h	1
2026-08-04	14	5–23	2.6 µg/m³	3.0	5h	1
2026-08-03	4	4–4	1.0 µg/m³	1.0	1h	1
2026-08-02	9	3–17	2.1 µg/m³	2.3	22h	1
2026-08-01	8	4–19	2.0 µg/m³	2.3	11h	1
2026-07-31	37	30–41	8.9 µg/m³	—	4h	3
2026-07-30	8	4–13	2.0 µg/m³	2.2	7h	1
2026-07-28	4	2–6	1.0 µg/m³	1.3	5h	1
2026-07-26	4	3–6	1.0 µg/m³	1.3	2h	1
2026-07-25	31	8–53	7.4 µg/m³	7.8	22h	1
2026-07-24	18	4–34	4.3 µg/m³	4.5	22h	1
2026-07-23	20	6–80	5.1 µg/m³	5.3	17h	1
2026-07-22	4	2–6	1.0 µg/m³	1.3	5h	1
2026-07-21	11	1–26	2.6 µg/m³	3.2	16h	1
2026-07-20	31	16–44	7.5 µg/m³	8.4	24h	1
2026-07-19	51	31–75	13.4 µg/m³	15.2	17h	1

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