Forsyth, Illinois Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Forsyth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy10%—84°69°—
- MondayJul 6Overcast——84°66°0°
- TuesdayJul 7Overcast——80°63°-4°
- WednesdayJul 8Overcast——82°64°+2°
- ThursdayJul 9Heavy Showers49%0.43″85°67°+3°
- FridayJul 10Light Drizzle49%0.01″81°70°-4°
- SaturdayJul 11Drizzle22%—82°69°+1°
AQI 22 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.94 fine-to-coarse ratio and 3 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 7 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- 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
- 11:14 PM
- Moonset
- 11:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Forsyth at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62535
16-Day Forecast — Forsyth
- Sun84°69°10%
- Mon84°66°8%
- Tue80°63°6%
- Wed82°64°8%
- Thu85°67°49%
- Fri81°70°49%
- Sat82°69°22%
- Sun85°68°10%
- Mon88°69°5%
- Tue90°74°9%
- Wed80°62°8%
- Thu78°54°29%
- Fri81°61°29%
- Sat87°66°35%
- Sun86°70°42%
- Mon87°72°27%
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 — Forsyth
SPC includes Forsyth 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 Forsyth
- 62535