Chesterfield, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Chesterfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast25%—93°77°—
- SundayJul 5Overcast22%—82°72°-11°
- MondayJul 6Clear18%—85°69°+3°
- TuesdayJul 7Clear——88°68°+3°
- WednesdayJul 8Mostly Clear——95°68°+7°
- ThursdayJul 9Overcast31%—96°76°+1°
- FridayJul 10Overcast44%—96°79°0°
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.9 µg/m³, PM10 at 13.1 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 50 now. With UV 5.7 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 27 around 1 PM.
- Present
- AQI 50
- UV peak
- 5.7 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5 at 11.9 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- breezy
- 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
- 10:55 PM
- Moonset
- 10:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Chesterfield at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 63005, 63017
16-Day Forecast — Chesterfield
- Sat93°77°25%
- Sun82°72°22%
- Mon85°69°18%
- Tue88°68°5%
- Wed95°68°9%
- Thu96°76°31%
- Fri96°79°44%
- Sat82°68°23%
- Sun81°63°7%
- Mon84°63°7%
- Tue83°64°10%
- Wed91°63°10%
- Thu93°68°10%
- Fri96°73°9%
- Sat81°68°14%
- Sun77°68°16%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Chesterfield
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 — Chesterfield
SPC has placed Chesterfield 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 Chesterfield
- 63017
- 63005
- 63006