Imperial, California Weather
Heat hardens the dust. Day 77 of spring. Read this microseason across nine climate regions →
Imperial weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——105°69°—
- ThursdayJun 4Clear——110°71°+5°
- FridayJun 5Clear——110°68°0°
- SaturdayJun 6Overcast——108°75°-2°
- SundayJun 7Overcast——106°73°-2°
- MondayJun 8Clear——105°71°-1°
- TuesdayJun 9Clear——106°72°+1°
PM2.5/PM10 ratio 0.43 with 6 mph wind — characteristic of long-range haze transport rather than a local source. AQI up 42 in the last 6 hours — air quality is degrading.
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 39 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 by mid-afternoon.
- Present
- AQI 39
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5/PM10 ratio 0.43 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.43
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:53 AM
- Moonset
- 4:08 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Imperial at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: March 4 (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 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.