What is the air quality trend in Grafton?

Over the past 8 days, Grafton had an average AQI of 63 based on station measurements. The worst day was 2026-07-17 with AQI 100.

How is Grafton air quality measured?

Air quality in Grafton 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 Grafton, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	24	20–30	5.8 µg/m³	3.1	3h	4
2026-07-21	47	30–64	11.7 µg/m³	13.1	24h	6
2026-07-20	43	17–63	10.8 µg/m³	5.8	24h	6
2026-07-19	57	29–91	15.8 µg/m³	21.6	24h	7
2026-07-18	84	30–155	27.8 µg/m³	46.7	24h	7
2026-07-17	100	28–177	39.4 µg/m³	4.1	24h	7
2026-07-16	88	45–199	34.7 µg/m³	—	24h	6
2026-07-15	66	52–128	19.3 µg/m³	27.5	21h	7

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