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

Over the past 15 days, St. Andrew-Windfields had an average AQI of 42 based on station measurements. The worst day was 2026-10-13 with AQI 69.

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
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

332h

PM2.5 Station

332h · 5 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	36	9–109	11.9 µg/m³	3.5	4h	3
2026-10-20	31	6–94	8.6 µg/m³	16.2	24h	4
2026-10-19	65	2–162	23.1 µg/m³	31.7	24h	2
2026-10-18	17	1–81	3.9 µg/m³	4.3	24h	2
2026-10-17	57	4–166	19.7 µg/m³	33.5	24h	2
2026-10-16	63	4–184	23.4 µg/m³	27.4	20h	1
2026-10-15	66	1–154	22.7 µg/m³	33.0	24h	2
2026-10-14	43	2–103	12.8 µg/m³	20.8	24h	3
2026-10-13	69	29–152	21.3 µg/m³	24.2	24h	2
2026-10-12	48	2–109	14.4 µg/m³	17.0	24h	2
2026-10-11	12	1–27	2.9 µg/m³	1.5	24h	3
2026-10-10	21	4–49	4.7 µg/m³	4.3	24h	4
2026-10-09	66	1–164	24.7 µg/m³	27.9	24h	1
2026-10-08	26	1–115	7.1 µg/m³	11.1	24h	3
2026-10-07	14	1–51	3.4 µg/m³	2.5	20h	3

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