What is the air quality trend in Troy?

Over the past 8 days, Troy had an average AQI of 111 based on station measurements. The worst day was 2026-07-17 with AQI 223.

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

169h

PM2.5 Station

169h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	74	61–84	22.9 µg/m³	48.6	23h	21
2026-07-20	75	59–99	23.3 µg/m³	48.5	24h	22
2026-07-19	86	64–108	28.7 µg/m³	63.5	24h	23
2026-07-18	96	39–194	39.6 µg/m³	63.5	24h	23
2026-07-17	223	175–296	165.9 µg/m³	275.2	24h	26
2026-07-16	216	169–275	161.8 µg/m³	359.6	24h	22
2026-07-15	62	48–140	17.2 µg/m³	23.7	24h	21
2026-07-14	56	51–62	14.8 µg/m³	19.0	2h	12

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