What is the air quality trend in Duncan?

Over the past 7 days, Duncan had an average AQI of 51 based on station measurements. The worst day was 2026-08-01 with AQI 61.

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

150h

PM2.5 Station

150h · 8 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-07	49	4–105	13.4 µg/m³	24h	12
2026-08-06	46	25–76	11.7 µg/m³	24h	22
2026-08-05	53	24–155	14.9 µg/m³	24h	19
2026-08-04	45	20–112	12.1 µg/m³	23h	16
2026-08-03	55	12–163	16.3 µg/m³	23h	14
2026-08-02	50	4–131	15.2 µg/m³	18h	8
2026-08-01	61	25–155	18.3 µg/m³	14h	4

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