Today | Weather | Monday, September 21, 2026

Weather in Troy, Michigan

01:53 PM
Now
Cloudy Weather
63° F
Feels Like 61°
Precipitation 1 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 67 %
Today
Cloudy Weather
Day 63°
Night 48°
Precipitation 9 %
Wind 12 mph
UV Index (0 - 11+) 2

Troy Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Stormy Weather

Day

73°

Night

64°

Wind

6 mph

Precipitation

80 %

Air Quality in Troy

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.87 µg/m³
PM10 2.62 µg/m³
O3 0.025 ppm
NO2 3.3 ppb
SO2 1.6 ppb
CO 0.17 ppm
NH3 0.69 µg/m³
NO 0.84 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.87 µg/m³
PM102.62 µg/m³
O348.11 µg/m³
NO26.26 µg/m³
SO24.2 µg/m³
CO198.26 µg/m³
NH30.69 µg/m³
NO0.84 µg/m³