Westfield, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Westfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain47%0.78″88°70°—
- SundayJul 5Overcast20%—83°70°-5°
- MondayJul 6Overcast14%—83°68°0°
- TuesdayJul 7Overcast——82°64°-1°
- WednesdayJul 8Mostly Clear——84°63°+2°
- ThursdayJul 9Thunderstorm35%—85°69°+1°
- FridayJul 10Drizzle40%0.04″83°68°-2°
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 49 now. With UV 7.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 49 now. With UV 7.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
- Present
- AQI 49
- UV peak
- 7.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 5.9 µg/m³, PM10 at 6.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h 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
- 10:46 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Westfield at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62474
16-Day Forecast — Westfield
- Sat88°70°47%
- Sun83°70°20%
- Mon83°68°14%
- Tue82°64°5%
- Wed84°63°7%
- Thu85°69°35%
- Fri83°68°40%
- Sat85°68°26%
- Sun74°59°7%
- Mon70°57°6%
- Tue76°60°12%
- Wed80°62°19%
- Thu81°65°26%
- Fri83°69°29%
- Sat85°70°29%
- Sun80°72°35%
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 — Westfield
SPC has placed Westfield 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 Westfield
- 62474