Today | Weather | Tuesday, August 19, 2025

Weather in Ann Arbor, Michigan

02:40 AM
Now
Stormy WeatherStormy weather, thunderstorms.
63° F
Feels Like 61°
Precipitation 40 %
Wind 5 mph
Humidity 85 %
Today
Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.
Day 79°
Night 63°
Precipitation 98 %
Wind 6 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Ann Arbor Weather Forecast Updated

10 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 19, 2024)

Day

72°

Night

57°

Air quality in Ann Arbor

NOW
34 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.83 µg/m³
PM10 4.85 µg/m³
O₃ 37.53 ppb
NO₂ 4.81 ppb
SO₂ 1.13 ppb
CO 160.97 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors