Station Name: LAKE MONONA AT MADISON, WI
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 840 feet

Nearest Address:
795 W Washington Ave
Madison, WI 53715
Dane County

GPS Coordinates: 43.0633297, -89.3970636

Nearby Water Temperatures

Heat Advisory issued July 15 at 12:45PM CDT until July 15 at 8:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed July 15, 2026, 12:45 PM
Expires: Wed July 15, 2026, 8:00 PM

* WHAT...Heat index values up to 103 degrees. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Air Quality Alert issued July 15 at 12:19PM CDT by NWS Chicago IL

Effective: Wed July 15, 2026, 12:19 PM
Expires: Thu July 16, 2026, 12:00 AM

The Illinois Environmental Protection Agency has issued a Red Forecast Air Pollution Action Day for Thursday July 16th for the AirNow AQI forecast sectors of Rockford and all 6 Chicago area forecast sectors. This is in addition to the ongoing Chicago Area Air Pollution Action Day in effect today. This Red Forecast Air Pollution Action Day is declared due to a forecast of Unhealthy-Red category particulates and or ozone on Thursday July 16th. Northern IL is expected to be on the edge of a thick plume of surface smoke moving in from the north and cleaner air to the south. There is some uncertainty in how far south the smoke progresses and the duration of the poor air quality as this dividing line may meander in and out of Northern IL late Wednesday night thru Friday. With this in mind, those with air quality concerns or outdoor plans are encouraged to check current NowCast readings or sign up for EnviroFlash alerts on AirNow.gov. Unhealthy - Everyone should reduced prolonged activities or heavy exertion outdoors. Active children, older adults, and people with pulmonary or respiratory disease such as asthma should avoid prolonged activities or heavy exertion outdoors. Area residents are urged to reduce pollution levels. Air quality forecasts, current air quality, and tips on how you can reduce your emissions can be found at www.airnow.gov. Media contact...Illinois EPA.