Webster Groves, Missouri Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Webster Groves weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers51%0.15″87°72°—
- SundayJul 5Heavy Showers32%1.0″83°70°-4°
- MondayJul 6Overcast——88°71°+5°
- TuesdayJul 7Clear——90°71°+2°
- WednesdayJul 8Overcast——98°71°+8°
- ThursdayJul 9Overcast35%—97°78°-1°
- FridayJul 10Light Drizzle37%0.02″93°72°-4°
AQI 51 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 17.5 µg/m³ (AQI 67) with a 0.87 fine-to-coarse ratio and 4 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 33. Overcast through the UV peak window (cloud cover ~90%) — afternoon ozone should stay flat.
- Present
- AQI 33
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 17.5 µg/m³ (AQI 67) with a 0.87 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.87
- 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
- 11:18 PM
- Moonset
- 11:14 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Webster Groves at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Webster Groves
- Sat87°73°51%
- Sun83°71°32%
- Mon88°71°9%
- Tue90°71°2%
- Wed98°71°7%
- Thu97°78°35%
- Fri93°72°37%
- Sat86°74°29%
- Sun86°69°11%
- Mon88°65°6%
- Tue95°69°5%
- Wed98°75°6%
- Thu102°71°11%
- Fri104°79°20%
- Sat101°82°16%
- Sun103°81°24%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Webster Groves
SPC has placed Webster Groves in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Webster Groves
- 63119