Callaway, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Callaway weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle27%—99°81°—
- SundayJul 5Light Rain21%0.09″99°78°0°
- MondayJul 6Thunderstorm78%0.17″92°74°-7°
- TuesdayJul 7Light Showers71%—86°71°-6°
- WednesdayJul 8Showers25%—79°69°-7°
- ThursdayJul 9Partly Cloudy22%—91°68°+12°
- FridayJul 10Overcast38%—101°72°+10°
AQI 109 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 53 in the last 6 hours — air quality is degrading. Ozone at AQI 167 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 167 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 167
- UV peak
- 6.2 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 167
PM × Wind × Precip
PM2.5 at 15.2 µg/m³, PM10 at 16.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- light
- 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
- 10:57 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Callaway at a glance
- Today vs. normal: 25°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 20620
16-Day Forecast — Callaway
- Sat99°81°27%
- Sun99°77°21%
- Mon92°74°78%
- Tue86°71°71%
- Wed79°69°25%
- Thu91°68°22%
- Fri101°72°38%
- Sat96°75°40%
- Sun83°69°33%
- Mon81°67°22%
- Tue90°65°22%
- Wed91°68°42%
- Thu91°69°37%
- Fri94°72°40%
- Sat98°73°40%
- Sun94°75°39%
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 — Callaway
SPC has placed Callaway in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Callaway
- 20620
- 20650