Lake Mathews, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Lake Mathews weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Partly Cloudy——89°63°—
- MondayJul 6Clear——90°59°+1°
- TuesdayJul 7Clear——96°61°+6°
- WednesdayJul 8Clear——100°63°+4°
- ThursdayJul 9Clear——102°66°+2°
- FridayJul 10Overcast——101°64°-1°
- SaturdayJul 11Overcast——95°67°-6°
AQI 36 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.2 µg/m³ (AQI 51) with a 0.72 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
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 33 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
- Present
- AQI 33
- UV peak
- 10.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 9.2 µg/m³ (AQI 51) with a 0.72 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.72
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:05 PM
- Moonset
- 11:08 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Lake Mathews at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Lake Mathews
- Sun89°63°1%
- Mon90°59°1%
- Tue96°61°0%
- Wed100°63°0%
- Thu102°66°0%
- Fri101°64°0%
- Sat95°67°1%
- Sun90°65°1%
- Mon101°66°8%
- Tue104°74°15%
- Wed102°74°8%
- Thu105°75°13%
- Fri102°76°14%
- Sat99°75°12%
- Sun104°74°19%
- Mon105°72°18%
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 Lake Mathews
- 92570
- 92504