Herscher, Illinois Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Herscher weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——73°54°—
- TuesdayJun 16Overcast79%—73°57°0°
- WednesdayJun 17Heavy Showers90%0.79″78°54°+5°
- ThursdayJun 18Light Drizzle90%—71°56°-7°
- FridayJun 19Partly Cloudy——67°54°-4°
- SaturdayJun 20Drizzle14%0.09″71°55°+4°
- SundayJun 21Drizzle38%0.17″65°53°-6°
AQI 26 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 5.2 µg/m³ (AQI 29) with a 0.96 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.
What's driving it
PM × Wind × Precip
PM2.5 at 5.2 µg/m³ (AQI 29) with a 0.96 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:21 AM
- Moonset
- 8:43 PM
- In sign
- ♊︎ Gemini
Solstice approaches — longest light
Herscher at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Herscher
- Mon73°54°1%
- Tue73°57°79%
- Wed78°54°90%
- Thu71°56°90%
- Fri67°54°5%
- Sat71°55°14%
- Sun65°53°38%
- Mon73°52°37%
- Tue73°57°14%
- Wed78°57°12%
- Thu84°66°16%
- Fri83°66°40%
- Sat88°70°36%
- Sun89°74°32%
- Mon87°71°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Herscher
SPC has placed Herscher in the Enhanced Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3ENHEnhanced Risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Herscher
- 60941