What is the air quality trend in Waterville?

Over the past 21 days, Waterville had an average AQI of 2 based on station measurements. The worst day was 2026-10-02 with AQI 6.

How is Waterville air quality measured?

Air quality in Waterville 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 Waterville, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Waterville, United States.

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

376h

PM2.5 Station

376h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	2	1–5	0.3 µg/m³	0.6	6h	1
2026-10-20	2	1–3	0.3 µg/m³	0.5	23h	1
2026-10-19	2	1–4	0.4 µg/m³	0.6	24h	1
2026-10-18	1	1–2	0.2 µg/m³	0.4	23h	1
2026-10-17	1	1–3	0.3 µg/m³	0.5	11h	1
2026-10-16	2	1–9	0.4 µg/m³	0.6	22h	1
2026-10-15	1	1–1	0.1 µg/m³	0.3	12h	1
2026-10-14	1	1–1	0.1 µg/m³	0.3	8h	1
2026-10-13	1	1–1	0.2 µg/m³	0.3	13h	1
2026-10-12	2	1–3	0.3 µg/m³	0.5	23h	1
2026-10-11	2	1–4	0.4 µg/m³	0.7	23h	1
2026-10-10	1	1–1	0.2 µg/m³	0.3	12h	1
2026-10-09	1	1–2	0.2 µg/m³	0.3	19h	1
2026-10-08	2	1–4	0.5 µg/m³	0.9	23h	1
2026-10-07	2	1–3	0.3 µg/m³	0.6	22h	1
2026-10-06	1	1–2	0.2 µg/m³	0.4	16h	1
2026-10-05	4	1–7	0.9 µg/m³	1.4	22h	1
2026-10-04	1	1–2	0.2 µg/m³	0.4	18h	1
2026-10-03	3	1–4	0.5 µg/m³	0.8	17h	1
2026-10-02	6	1–10	1.2 µg/m³	2.0	24h	1
2026-10-01	4	1–8	0.7 µg/m³	1.1	15h	1

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