Imperial Beach, California Weather
Coastal fog thickens at dawn. Day 78 of spring. Read this microseason across nine climate regions →
Imperial Beach weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Foggy——68°60°—
- FridayJun 5Foggy——66°60°-2°
- SaturdayJun 6Foggy——73°59°+7°
- SundayJun 7Overcast——72°63°-1°
- MondayJun 8Mostly Clear——73°62°+1°
- TuesdayJun 9Overcast——72°64°-1°
- WednesdayJun 10Partly Cloudy——74°61°+2°
PM2.5/PM10 ratio 0.59 with 10 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
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 37 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 37
- UV peak
- 1.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5/PM10 ratio 0.59 with 10 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.59
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
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).
The higher the clouds, the finer the weather.
- Moonrise
- 6:34 AM
- Moonset
- 5:16 PM
- In sign
- ♒︎ Aquarius
Coastal fog thickens at dawn
Imperial Beach at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: March 2 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, 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.