What is the air quality trend in Wil?

Over the past 14 days, Wil had an average AQI of 29 based on station measurements. The worst day was 2026-05-27 with AQI 45.

How is Wil air quality measured?

Air quality in Wil 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 Wil, Switzerland

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

Historical PM2.5 and AQI trend from monitoring stations near Wil, Switzerland.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 3 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	28	9–53	6.7 µg/m³	5.0	24h	6
2026-05-28	31	14–42	7.3 µg/m³	8.4	24h	8
2026-05-27	45	29–59	11.1 µg/m³	15.2	24h	8
2026-05-26	42	31–59	10.3 µg/m³	13.8	24h	8
2026-05-25	38	25–60	9.2 µg/m³	12.5	24h	8
2026-05-24	33	24–48	7.9 µg/m³	7.6	24h	8
2026-05-23	28	12–44	6.8 µg/m³	5.3	24h	8
2026-05-22	24	12–52	5.8 µg/m³	3.9	24h	7
2026-05-21	22	14–28	5.2 µg/m³	3.2	24h	7
2026-05-20	24	12–41	5.8 µg/m³	3.6	24h	7
2026-05-19	25	11–55	6.1 µg/m³	3.8	24h	7
2026-05-18	26	12–39	6.2 µg/m³	2.8	24h	6
2026-05-17	20	9–41	4.9 µg/m³	2.2	24h	6
2026-05-16	28	5–53	6.7 µg/m³	3.6	24h	6

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