What is the air quality trend in Troy?

Over the past 8 days, Troy had an average AQI of 110 based on station measurements. The worst day was 2026-07-17 with AQI 224.

How is Troy air quality measured?

Air quality in Troy 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 Troy, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	79	63–86	25.2 µg/m³	51.3	20h	19
2026-07-20	76	56–89	23.8 µg/m³	48.5	24h	20
2026-07-19	89	64–112	30.2 µg/m³	63.5	24h	21
2026-07-18	92	38–191	37.7 µg/m³	63.5	24h	20
2026-07-17	224	170–285	168.2 µg/m³	275.2	24h	23
2026-07-16	213	168–292	157.7 µg/m³	359.6	24h	20
2026-07-15	58	48–147	15.6 µg/m³	23.7	24h	19
2026-07-14	54	52–59	13.4 µg/m³	18.1	4h	16

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