Manhattan, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Manhattan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain80%3.0″81°70°—
- SundayJul 5Foggy18%—79°66°-2°
- MondayJul 6Overcast——79°64°0°
- TuesdayJul 7Overcast——83°61°+4°
- WednesdayJul 8Overcast——80°60°-3°
- ThursdayJul 9Thunderstorm50%0.07″80°67°0°
- FridayJul 10Overcast44%—81°64°+1°
AQI 37 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.4 µg/m³, PM10 at 9.0 µg/m³ — typical background levels with no transport signature.
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 35. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 2.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM2.5 at 8.4 µg/m³, PM10 at 9.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- calm
- Recent rain
- 1h in last 6h
- Pattern
- background
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
- 10:49 PM
- Moonset
- 9:56 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Manhattan at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 60442
16-Day Forecast — Manhattan
- Sat81°70°80%
- Sun79°66°18%
- Mon79°64°3%
- Tue83°61°2%
- Wed80°60°5%
- Thu80°67°50%
- Fri81°64°44%
- Sat81°62°15%
- Sun69°60°9%
- Mon76°56°9%
- Tue76°61°8%
- Wed80°62°29%
- Thu83°65°25%
- Fri80°69°19%
- Sat85°69°24%
- Sun83°70°33%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Manhattan
SPC has placed Manhattan in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Manhattan
- 60442