Ashburn, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Ashburn weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast15%—92°74°—
- SundayJul 5Heavy Drizzle17%0.10″86°72°-6°
- MondayJul 6Overcast10%—84°67°-2°
- TuesdayJul 7Overcast——87°64°+3°
- WednesdayJul 8Overcast——92°65°+5°
- ThursdayJul 9Heavy Drizzle39%—88°70°-4°
- FridayJul 10Light Drizzle41%0.01″90°71°+2°
AQI 34 (Good), driven by Ozone. AQI up 5 over the last 6 hours (gradual rise). Ozone at AQI 49 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
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 49 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 49
- UV peak
- 5.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 7.9 µg/m³, PM10 at 9.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- 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
- 10:58 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Ashburn at a glance
- Today vs. normal: 20°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 63433
16-Day Forecast — Ashburn
- Sat92°74°15%
- Sun86°72°17%
- Mon84°67°10%
- Tue87°64°2%
- Wed92°65°6%
- Thu88°70°39%
- Fri90°71°41%
- Sat78°64°23%
- Sun80°60°6%
- Mon81°58°5%
- Tue81°57°10%
- Wed88°58°11%
- Thu90°66°13%
- Fri92°67°16%
- Sat82°69°21%
- Sun80°65°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 — Ashburn
SPC has placed Ashburn 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 Ashburn
- 63433