Columbia, Maryland Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Columbia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast42%—78°64°—
- TuesdayJun 16Overcast——81°55°+3°
- WednesdayJun 17Heavy Drizzle17%—87°64°+6°
- ThursdayJun 18Light Showers34%—93°71°+6°
- FridayJun 19Drizzle44%—80°66°-13°
- SaturdayJun 20Overcast——78°60°-2°
- SundayJun 21Overcast——78°63°0°
AQI 39 (Good), driven by PM2.5. AQI down 24 over the last 6 hours — air quality is improving sharply. PM2.5 at 6.7 µg/m³, PM10 at 6.9 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 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 around 1 PM.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 14
PM × Wind × Precip
PM2.5 at 6.7 µg/m³, PM10 at 6.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:42 AM
- Moonset
- 8:48 PM
- In sign
- ♊︎ Gemini
Solstice approaches — longest light
Columbia at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Columbia
- Mon78°64°42%
- Tue81°55°4%
- Wed87°64°17%
- Thu93°71°34%
- Fri80°66°44%
- Sat78°60°5%
- Sun78°63°9%
- Mon76°62°32%
- Tue82°60°29%
- Wed82°64°16%
- Thu88°66°16%
- Fri87°67°26%
- Sat86°67°26%
- Sun90°68°32%
- Mon100°70°32%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Columbia
Right now in the garden
Peak growing season
As of June 15, 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.
ZIP codes in Columbia
- 21044
- 21045
- 21046
- 21029
- 20588
- 21150