Callao, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Callao weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle22%0.01″87°70°—
- SundayJul 5Heavy Showers27%0.58″85°69°-2°
- MondayJul 6Overcast——82°67°-3°
- TuesdayJul 7Overcast——84°64°+2°
- WednesdayJul 8Overcast——88°65°+4°
- ThursdayJul 9Showers37%—86°71°-2°
- FridayJul 10Drizzle39%—84°69°-2°
AQI 43 (Good), driven by PM2.5. AQI up 6 over the last 6 hours (gradual rise). PM2.5 at 9.5 µg/m³, PM10 at 12.7 µg/m³ — typical background levels with no transport signature.
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 51 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 4.3 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 9.5 µg/m³, PM10 at 12.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.75
- 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
- 11:04 PM
- Moonset
- 10:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Callao at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 63534
16-Day Forecast — Callao
- Sat86°70°22%
- Sun85°70°27%
- Mon82°67°6%
- Tue84°64°1%
- Wed88°65°6%
- Thu86°71°37%
- Fri84°69°39%
- Sat76°62°17%
- Sun78°60°7%
- Mon79°58°4%
- Tue78°58°8%
- Wed83°58°23%
- Thu84°63°13%
- Fri84°67°13%
- Sat84°68°19%
- Sun77°63°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 — Callao
SPC has placed Callao in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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 Callao
- 63534