What is the air quality trend in Keswick?

Over the past 14 days, Keswick had an average AQI of 78 based on station measurements. The worst day was 2026-07-16 with AQI 203.

How is Keswick air quality measured?

Air quality in Keswick 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 Keswick, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

298h

PM2.5 Station

298h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	88	50–147	29.5 µg/m³	21h	1
2026-07-20	27	17–68	6.5 µg/m³	24h	2
2026-07-19	51	17–155	15.8 µg/m³	24h	1
2026-07-18	137	21–182	66.9 µg/m³	24h	1
2026-07-17	124	17–234	66.2 µg/m³	24h	1
2026-07-16	203	152–281	134.9 µg/m³	19h	1
2026-07-15	129	42–178	61.3 µg/m³	17h	1
2026-07-14	57	33–178	18.4 µg/m³	24h	1
2026-07-13	65	38–86	19.2 µg/m³	24h	2
2026-07-12	79	50–137	25.0 µg/m³	24h	2
2026-07-11	50	30–62	12.8 µg/m³	24h	2
2026-07-10	24	13–38	5.8 µg/m³	24h	2
2026-07-09	37	24–55	9.1 µg/m³	14h	3
2026-07-08	24	17–37	5.8 µg/m³	11h	3

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