Southwest City, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Southwest City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast28%—94°75°—
- SundayJul 5Showers48%0.44″87°69°-7°
- MondayJul 6Thunderstorm22%—92°68°+5°
- TuesdayJul 7Overcast——91°69°-1°
- WednesdayJul 8Clear——93°70°+2°
- ThursdayJul 9Overcast16%—96°75°+3°
- FridayJul 10Overcast29%—93°78°-3°
AQI 46 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.73 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47 now. With UV 8.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 55 around 1 PM.
- Present
- AQI 47
- UV peak
- 8.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 55
PM × Wind × Precip
PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.73 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.73
- 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
- 11:08 PM
- Moonset
- 10:28 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Southwest City at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: March 26 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Southwest City
- Sat94°75°28%
- Sun87°69°48%
- Mon92°68°22%
- Tue91°69°8%
- Wed93°70°3%
- Thu96°75°16%
- Fri93°78°29%
- Sat82°67°22%
- Sun83°63°5%
- Mon84°59°4%
- Tue85°61°5%
- Wed87°67°6%
- Thu88°65°16%
- Fri90°69°13%
- Sat89°64°16%
- Sun84°65°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 — Southwest City
SPC has placed Southwest City 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 Southwest City
- 64863