What is the air quality trend in St. Andrew-Windfields?

Over the past 8 days, St. Andrew-Windfields had an average AQI of 49 based on station measurements. The worst day was 2026-05-25 with AQI 71.

How is St. Andrew-Windfields air quality measured?

Air quality in St. Andrew-Windfields 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 St. Andrew-Windfields, Canada

Name: St. Andrew-Windfields Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near St. Andrew-Windfields, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 11 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	44	21–77	11.7 µg/m³	1.9	10h	12
2026-05-29	51	14–125	14.6 µg/m³	12.1	24h	14
2026-05-28	41	18–102	11.2 µg/m³	1.6	24h	14
2026-05-27	53	18–159	15.6 µg/m³	6.1	24h	13
2026-05-26	44	11–92	12.0 µg/m³	6.0	24h	11
2026-05-25	71	29–155	22.4 µg/m³	11.2	24h	15
2026-05-24	44	19–94	12.0 µg/m³	7.1	24h	15
2026-05-23	49	7–72	12.9 µg/m³	3.1	14h	13

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