Farmington, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Farmington weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain51%0.61″84°69°—
- SundayJul 5Overcast18%—83°68°-1°
- MondayJul 6Partly Cloudy——82°65°-1°
- TuesdayJul 7Clear——80°61°-2°
- WednesdayJul 8Light Drizzle10%—84°64°+4°
- ThursdayJul 9Thunderstorm37%0.02″82°71°-2°
- FridayJul 10Overcast37%—78°65°-4°
AQI 25 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 7.6 µg/m³, PM10 at 8.7 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 9 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 7.6 µg/m³, PM10 at 8.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- Wind
- breezy
- 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
- 10:55 PM
- Moonset
- 10:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Farmington at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61531
16-Day Forecast — Farmington
- Sat84°69°51%
- Sun83°68°18%
- Mon82°65°4%
- Tue80°61°5%
- Wed84°64°10%
- Thu82°71°37%
- Fri78°65°37%
- Sat83°66°19%
- Sun69°59°9%
- Mon74°56°6%
- Tue75°60°9%
- Wed78°63°16%
- Thu82°64°14%
- Fri82°68°26%
- Sat85°69°26%
- Sun83°72°20%
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 — Farmington
SPC has placed Farmington in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Farmington
- 61531