What is the air quality trend in Montclair?

Over the past 8 days, Montclair had an average AQI of 81 based on station measurements. The worst day was 2026-07-17 with AQI 170.

How is Montclair air quality measured?

Air quality in Montclair 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 Montclair, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	28	25–30	6.6 µg/m³	2h	16
2026-07-21	52	28–75	14.5 µg/m³	24h	29
2026-07-20	69	56–85	20.5 µg/m³	24h	29
2026-07-19	68	37–156	20.4 µg/m³	24h	30
2026-07-18	130	57–160	50.4 µg/m³	24h	31
2026-07-17	170	59–223	101.7 µg/m³	24h	33
2026-07-16	79	54–209	28.2 µg/m³	24h	30
2026-07-15	52	38–81	13.5 µg/m³	21h	31

Back to Montclair Air Quality