Flossmoor, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Flossmoor weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain78%1.1″82°70°—
- SundayJul 5Foggy13%—77°66°-5°
- MondayJul 6Overcast——82°68°+5°
- TuesdayJul 7Overcast——85°66°+3°
- WednesdayJul 8Overcast——85°65°0°
- ThursdayJul 9T-storm w/ Hail50%0.11″80°67°-5°
- FridayJul 10Overcast45%—82°67°+2°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.95 fine-to-coarse ratio and 4 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 39. Overcast through the UV peak window (cloud cover ~78%) — afternoon ozone should stay flat.
- Present
- AQI 39
- UV peak
- 2.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.95 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- calm
- 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
- 10:48 PM
- Moonset
- 9:55 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Flossmoor 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: 60422
16-Day Forecast — Flossmoor
- Sat82°70°78%
- Sun77°66°13%
- Mon82°68°4%
- Tue85°66°2%
- Wed85°65°4%
- Thu80°67°50%
- Fri82°67°45%
- Sat84°65°14%
- Sun73°64°10%
- Mon78°62°10%
- Tue81°64°8%
- Wed84°65°19%
- Thu87°68°23%
- Fri85°72°16%
- Sat91°71°14%
- Sun89°72°28%
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 — Flossmoor
SPC has placed Flossmoor 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 Flossmoor
- 60422