What is the air quality trend in Sycamore?

Over the past 8 days, Sycamore had an average AQI of 73 based on station measurements. The worst day was 2026-07-16 with AQI 122.

How is Sycamore air quality measured?

Air quality in Sycamore 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 Sycamore, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

125h

PM2.5 Station

125h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	36	35–37	8.6 µg/m³	2h	2
2026-07-21	47	14–108	12.7 µg/m³	15h	3
2026-07-20	74	15–156	24.2 µg/m³	19h	2
2026-07-19	63	13–180	23.2 µg/m³	17h	2
2026-07-18	90	8–169	32.9 µg/m³	19h	2
2026-07-17	83	17–184	35.1 µg/m³	13h	2
2026-07-16	122	32–194	51.7 µg/m³	20h	2
2026-07-15	75	45–168	24.5 µg/m³	20h	2

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