What is the air quality trend in Lombard?

Over the past 8 days, Lombard had an average AQI of 99 based on station measurements. The worst day was 2026-07-17 with AQI 232.

How is Lombard air quality measured?

Air quality in Lombard 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 Lombard, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Lombard, 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 · 8 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	34	34–34	8.1 µg/m³	1h	8
2026-07-21	63	32–97	18.4 µg/m³	24h	265
2026-07-20	97	50–106	33.9 µg/m³	24h	255
2026-07-19	111	62–160	40.6 µg/m³	24h	265
2026-07-18	50	26–88	12.9 µg/m³	24h	265
2026-07-17	232	69–358	178.5 µg/m³	24h	279
2026-07-16	152	52–326	99.7 µg/m³	24h	259
2026-07-15	53	51–57	12.9 µg/m³	23h	269

Back to Lombard Air Quality