Grant Park, Illinois Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Grant Park weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast26%—78°67°—
- MondayJul 6Overcast——79°65°+1°
- TuesdayJul 7Light Drizzle——82°63°+3°
- WednesdayJul 8Overcast——82°66°0°
- ThursdayJul 9T-storm w/ Hail59%0.52″82°68°0°
- FridayJul 10Thunderstorm47%—82°69°0°
- SaturdayJul 11Drizzle26%0.02″81°67°-1°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.3 µg/m³ (AQI 35) with a 0.95 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~92%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 3.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 6.3 µg/m³ (AQI 35) with a 0.95 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:09 PM
- Moonset
- 11:02 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grant Park at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 60940
16-Day Forecast — Grant Park
- Sun77°67°26%
- Mon79°65°9%
- Tue82°63°1%
- Wed82°66°3%
- Thu82°68°59%
- Fri82°69°47%
- Sat81°67°26%
- Sun84°67°18%
- Mon86°69°8%
- Tue87°75°7%
- Wed74°59°8%
- Thu79°58°29%
- Fri81°58°19%
- Sat84°66°26%
- Sun85°69°30%
- Mon87°68°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Grant Park
SPC includes Grant Park in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Grant Park
- 60940