Current Conditions

Portage Park, Illinois

79°F26°C
Partly Cloudy

Wind

S 9 mph14 km/h

Humidity

59%

Cloud Cover

51%

As of Tuesday, September 8, 2026 at 7:01 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 77°F25°C. Breezy from the S at 9 to 10 mph15 to 15 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 80°F27°CLow 77°F25°CPrecip 0 in0 mmCloud 74%Wind S 8 mph13 km/hTuesday: Overcast and warm, with a high of 80°F27°C. Breezy from the SSE at 7 to 10 mph12 to 16 km/h. Tuesday Night: Mostly cloudy, with a low around 77°F25°C. Breezy from the S at 9 to 10 mph15 to 15 km/h.
RainHigh 79°F26°CLow 73°F23°CPrecip 0.38 in9.6 mm98%Cloud 86%Wind WSW 9 mph14 km/hWednesday: Overcast and warm, with a high of 79°F26°C and morning low of 73°F23°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 98% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 74°F23°C. Breezy from the SW at 8 to 10 mph13 to 16 km/h. 35% chance of drizzle before dawn.
Partly CloudyHigh 75°F24°CLow 68°F20°CPrecip 0.01 in0.3 mm7%Cloud 67%Wind NNE 7 mph11 km/hThursday: Overcast and warm, with a high of 75°F24°C and morning low of 69°F21°C. Breezy from the NNE at 7 to 9 mph12 to 14 km/h. Thursday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the N at 7 mph11 km/h.
ClearHigh 79°F26°CLow 64°F18°CPrecip 0 in0 mmCloud 18%Wind SE 6 mph10 km/hFriday: Mostly clear and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h. Friday Night: Mostly clear, with a low around 65°F18°C. Breezy from the SE at 6 to 8 mph10 to 14 km/h.
DrizzleHigh 83°F28°CLow 67°F20°CPrecip 0.03 in0.7 mm16%Cloud 43%Wind SW 8 mph13 km/hSaturday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 67°F20°C. Breezy from the SW at 8 to 9 mph14 to 15 km/h. 16% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the SW at 7 to 8 mph12 to 14 km/h. 16% chance of drizzle in the evening.
DrizzleHigh 73°F23°CLow 65°F19°CPrecip 0.03 in0.8 mm11%Cloud 34%Wind NNW 9 mph14 km/hSunday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 65°F19°C. Breezy from the NNW at 10 mph15 km/h. 11% chance of drizzle in the afternoon. Sunday Night: Partly cloudy, with a low around 66°F19°C. Breezy from the N at 8 to 10 mph13 to 16 km/h.
ShowersHigh 75°F24°CLow 63°F17°CPrecip 0.11 in2.7 mm20%Cloud 55%Wind SE 10 mph17 km/hMonday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 63°F17°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. 20% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 64°F18°C. Breezy from the SE at 11 to 14 mph17 to 23 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 880°F27°C77°F25°C0 in0 mm· —74%Partly CloudyS 8 mph13 km/h
WednesdaySep 979°F26°C73°F23°C0.38 in9.6 mm· 98%86%RainWSW 9 mph14 km/h
ThursdaySep 1075°F24°C68°F20°C0.01 in0.3 mm· 7%67%Partly CloudyNNE 7 mph11 km/h
FridaySep 1179°F26°C64°F18°C0 in0 mm· —18%ClearSE 6 mph10 km/h
SaturdaySep 1283°F28°C67°F20°C0.03 in0.7 mm· 16%43%DrizzleSW 8 mph13 km/h
SundaySep 1373°F23°C65°F19°C0.03 in0.8 mm· 11%34%DrizzleNNW 9 mph14 km/h
MondaySep 1475°F24°C63°F17°C0.11 in2.7 mm· 20%55%ShowersSE 10 mph17 km/h
TuesdaySep 1580°F27°C70°F21°C0.12 in3.1 mm· 25%67%ShowersSSW 12 mph20 km/h
WednesdaySep 1675°F24°C67°F19°C0.16 in4.1 mm· 30%64%ShowersENE 8 mph13 km/h
ThursdaySep 1780°F27°C69°F21°C0.17 in4.4 mm· 29%57%ShowersS 10 mph17 km/h
FridaySep 1875°F24°C67°F20°C0.15 in3.9 mm· 23%52%ShowersW 11 mph18 km/h
SaturdaySep 1971°F21°C63°F17°C0.2 in5 mm· 26%59%ShowersNW 10 mph16 km/h
SundaySep 2068°F20°C59°F15°C0.15 in3.9 mm· 20%57%ShowersN 10 mph16 km/h
MondaySep 2167°F20°C57°F14°C0.11 in2.9 mm· 19%52%ShowersNE 9 mph15 km/h
TuesdaySep 2269°F20°C57°F14°C0.07 in1.8 mm· 12%52%DrizzleSE 9 mph14 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 41.9578°N, 87.7651°W·Elevation: 188m·Timezone: America/Chicago·Population: 64,841