Today | Weather | Monday, September 21, 2026

Weather in Rochester Hills, Michigan

04:42 PM
Now
Cloudy Weather
61° F
Feels Like 57°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 1
Humidity 68 %
Today
Cloudy Weather
Day 63°
Night 46°
Precipitation 8 %
Wind 13 mph
UV Index (0 - 11+) 2

Rochester Hills Weather Forecast Updated

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

UV Index

20

Precipitation

100 %

Air Quality in Rochester Hills

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.92 µg/m³
PM10 2.55 µg/m³
O3 0.025 ppm
NO2 3.3 ppb
SO2 1.5 ppb
CO 0.18 ppm
NH3 0.69 µg/m³
NO 0.32 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)
PM2.51.92 µg/m³
PM102.55 µg/m³
O349.14 µg/m³
NO26.23 µg/m³
SO23.82 µg/m³
CO201.71 µg/m³
NH30.69 µg/m³
NO0.32 µg/m³