Maryland Heights, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Maryland Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast19%—93°78°—
- SundayJul 5Drizzle19%0.03″84°74°-9°
- MondayJul 6Overcast——86°71°+2°
- TuesdayJul 7Clear——88°69°+2°
- WednesdayJul 8Mostly Clear——97°71°+9°
- ThursdayJul 9Overcast32%—101°79°+4°
- FridayJul 10Light Drizzle45%—97°79°-4°
AQI 48 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 55 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 55 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 55
- UV peak
- 4.9 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 55
PM × Wind × Precip
PM2.5 at 10.6 µg/m³, PM10 at 11.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.90
- 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
- 10:54 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Maryland Heights 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 code: 63043
16-Day Forecast — Maryland Heights
- Sat93°78°19%
- Sun84°74°19%
- Mon86°71°7%
- Tue88°69°5%
- Wed97°71°8%
- Thu101°79°32%
- Fri97°79°45%
- Sat83°70°23%
- Sun83°64°7%
- Mon85°64°7%
- Tue85°64°10%
- Wed92°67°11%
- Thu95°72°19%
- Fri97°75°19%
- Sat84°69°23%
- Sun77°69°29%
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 — Maryland Heights
SPC has placed Maryland Heights 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 Maryland Heights
- 63043
- 63146