Holtville, California Weather
The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →
Holtville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Partly Cloudy——111°84°—
- MondayJul 6Clear——111°81°0°
- TuesdayJul 7Clear——113°82°+2°
- WednesdayJul 8Clear——113°83°0°
- ThursdayJul 9Clear——114°83°+1°
- FridayJul 10Overcast——112°84°-2°
- SaturdayJul 11Overcast——110°82°-2°
AQI 33 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.0 µg/m³ (AQI 50), ratio 0.61 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
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 32 now. With UV 9.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 38 around 1 PM.
- Present
- AQI 32
- UV peak
- 9.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 38
PM × Wind × Precip
PM2.5 at 9.0 µg/m³ (AQI 50), ratio 0.61 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.61
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:56 PM
- Moonset
- 11:01 AM
- In sign
- ♓︎ Pisces
The monsoon settles in
Holtville at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: March 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 92250
16-Day Forecast — Holtville
- Sun111°84°1%
- Mon111°81°1%
- Tue113°82°0%
- Wed113°83°0%
- Thu114°83°0%
- Fri112°84°0%
- Sat110°82°1%
- Sun111°85°4%
- Mon114°86°15%
- Tue103°86°6%
- Wed104°85°10%
- Thu111°88°6%
- Fri120°90°10%
- Sat119°92°6%
- Sun118°89°6%
- Mon119°86°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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.
ZIP codes in Holtville
- 92250