What is the air quality trend in Duncan?

Over the past 15 days, Duncan had an average AQI of 51 based on station measurements. The worst day was 2026-05-25 with AQI 72.

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 Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

313h

PM2.5 Station

313h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	34	4–73	8.7 µg/m³	15h	6
2026-05-28	33	7–180	10.9 µg/m³	24h	6
2026-05-27	57	16–155	18.0 µg/m³	23h	5
2026-05-26	56	13–148	17.6 µg/m³	22h	5
2026-05-25	72	11–185	26.1 µg/m³	24h	6
2026-05-24	59	16–131	18.1 µg/m³	23h	7
2026-05-23	37	12–152	10.2 µg/m³	23h	5
2026-05-22	54	13–156	16.8 µg/m³	24h	4
2026-05-21	42	11–155	12.2 µg/m³	24h	5
2026-05-20	60	6–138	18.1 µg/m³	22h	6
2026-05-19	54	10–154	16.8 µg/m³	23h	4
2026-05-18	52	3–320	23.5 µg/m³	21h	4
2026-05-17	53	1–124	17.3 µg/m³	14h	3
2026-05-16	63	14–172	20.1 µg/m³	22h	8
2026-05-15	42	10–115	11.6 µg/m³	9h	8

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