What is the air quality trend in Duncan?

Over the past 8 days, Duncan had an average AQI of 55 based on station measurements. The worst day was 2026-05-21 with AQI 76.

How is Duncan air quality measured?

Air quality in Duncan 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 Duncan, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Duncan, Canada.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	33	2–120	9.0 µg/m³	23h	9
2026-05-27	52	19–123	15.2 µg/m³	24h	9
2026-05-26	54	14–120	16.4 µg/m³	24h	8
2026-05-25	65	14–169	21.3 µg/m³	24h	9
2026-05-24	61	18–153	19.1 µg/m³	24h	12
2026-05-23	55	12–159	16.8 µg/m³	24h	9
2026-05-22	47	17–93	12.9 µg/m³	24h	6
2026-05-21	76	76–76	24.2 µg/m³	1h	9

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