Station Name: FOX RIVER AT MILLER BRIDGE NEAR MCHENRY, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 728 feet

Nearest Address:
Charles J Miller Rd
McHenry, IL 60051
McHenry County

GPS Coordinates: 42.3233333, -88.2516667

Nearby Water Temperatures

Air Quality Alert issued July 18 at 12:13AM CDT by NWS Chicago IL

Effective: Sat July 18, 2026, 12:13 AM
Expires: Sun July 19, 2026, 12:15 AM

The Illinois Environmental Protection Agency has determined that the "Air Pollution Action Day" designation will remain in effect for the greater Chicago Metropolitan Area through midnight CDT tonight. A Chicago area "Air Pollution Action Day" is declared when weather conditions are such that widespread ozone and or particulate levels are expected to be at or above the Unhealthy for Sensitive Groups (USG) category of the Air Quality Index (AQI) for multiple days. Ozone is expected to be the primary pollutant of concern although smoke/PM2.5 may also become a concern later in the work week. Active children and adults, especially people with pulmonary or respiratory disease such as asthma, should limit prolonged outdoor activity. 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

Beach Hazards Statement issued July 18 at 3:50AM CDT until July 19 at 10:00AM CDT by NWS Chicago IL

Effective: Sat July 18, 2026, 3:50 AM
Expires: Sat July 18, 2026, 12:00 PM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 7 ft expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...From this evening through early Sunday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.

Beach Hazards Statement issued July 18 at 10:10AM CDT until July 19 at 10:00AM CDT by NWS Chicago IL

Effective: Sat July 18, 2026, 10:10 AM
Expires: Sat July 18, 2026, 6:15 PM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 7 ft expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...From 7 PM CDT this evening through Sunday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.