Fullerton, California Weather
Bay laurel fragrance sweetens shade. Day 89 of spring. Read this microseason across nine climate regions →
Fullerton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Mostly Clear——87°62°—
- TuesdayJun 16Overcast——86°59°-1°
- WednesdayJun 17Overcast——80°61°-6°
- ThursdayJun 18Clear——80°64°0°
- FridayJun 19Mostly Clear——78°63°-2°
- SaturdayJun 20Clear——76°62°-2°
- SundayJun 21Clear——77°62°+1°
AQI 58 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.4 µg/m³ (AQI 61) with a 0.79 fine-to-coarse ratio and 4 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
PM × Wind × Precip
PM2.5 at 14.4 µg/m³ (AQI 61) with a 0.79 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.79
- Wind
- calm
- 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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 7:03 AM
- Moonset
- 9:21 PM
- In sign
- ♋︎ Cancer
Bay laurel fragrance sweetens shade
Fullerton at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Fullerton
- Mon87°62°0%
- Tue86°59°0%
- Wed80°61°0%
- Thu80°64°2%
- Fri78°63°0%
- Sat76°62°0%
- Sun77°62°0%
- Mon80°64°0%
- Tue85°66°0%
- Wed86°67°0%
- Thu86°68°0%
- Fri88°68°0%
- Sat89°69°3%
- Sun90°69°0%
- Mon88°69°0%
- Tue87°67°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Fullerton
Right now in the garden
Peak growing season
As of June 16, 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 Fullerton
- 92835
- 92833
- 92832
- 92831
- 92834
- 92836
- 92837
- 92838