What is the air quality trend in Annex?

Over the past 8 days, Annex had an average AQI of 53 based on station measurements. The worst day was 2026-05-23 with AQI 67.

How is Annex air quality measured?

Air quality in Annex 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 Annex, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 13 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	41	27–80	10.8 µg/m³	2.0	8h	13
2026-05-29	50	16–124	14.1 µg/m³	12.1	24h	15
2026-05-28	45	18–101	12.0 µg/m³	1.6	24h	14
2026-05-27	56	21–106	15.9 µg/m³	6.1	24h	16
2026-05-26	53	18–134	15.3 µg/m³	6.0	24h	13
2026-05-25	65	24–154	19.5 µg/m³	11.2	24h	16
2026-05-24	47	13–86	12.8 µg/m³	7.1	24h	14
2026-05-23	67	42–93	19.9 µg/m³	3.1	16h	18

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