Wheaton, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Wheaton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle29%—92°72°—
- SundayJul 5Drizzle29%0.06″87°69°-5°
- MondayJul 6Light Drizzle10%—89°68°+2°
- TuesdayJul 7Overcast11%—91°69°+2°
- WednesdayJul 8Overcast——93°70°+2°
- ThursdayJul 9Overcast11%—95°72°+2°
- FridayJul 10Overcast35%—94°77°-1°
AQI 47 (Good), driven by PM2.5. AQI up 7 over the last 6 hours (gradual rise). PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.76 fine-to-coarse ratio and 5 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
Ozone × UV × Sky
Ozone at AQI 46 now. With UV 8.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 51 around 1 PM.
- Present
- AQI 46
- UV peak
- 8.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.76 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- Wind
- light
- 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
- 11:06 PM
- Moonset
- 10:26 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Wheaton at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: March 28 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 64874
16-Day Forecast — Wheaton
- Sat92°72°29%
- Sun87°69°29%
- Mon89°68°10%
- Tue91°69°11%
- Wed93°70°6%
- Thu95°72°11%
- Fri94°77°35%
- Sat91°68°20%
- Sun88°62°8%
- Mon84°58°4%
- Tue92°60°3%
- Wed85°66°3%
- Thu88°64°7%
- Fri86°67°13%
- Sat87°67°13%
- Sun91°68°13%
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 — Wheaton
SPC has placed Wheaton 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 Wheaton
- 64874