Rowland Heights, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Rowland Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——86°64°—
- MondayJul 6Overcast——87°59°+1°
- TuesdayJul 7Clear——88°61°+1°
- WednesdayJul 8Clear——92°70°+4°
- ThursdayJul 9Clear——91°71°-1°
- FridayJul 10Overcast——90°71°-1°
- SaturdayJul 11Overcast——85°72°-5°
AQI 61 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 17.8 µg/m³, PM10 at 22.2 µg/m³ — typical background levels with no transport signature.
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 44 now. With UV 12 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 70 around 1 PM.
- Present
- AQI 44
- UV peak
- 12.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 70
PM × Wind × Precip
PM2.5 at 17.8 µg/m³, PM10 at 22.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.80
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:07 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Rowland Heights at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: March 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 91748
16-Day Forecast — Rowland Heights
- Sun87°64°1%
- Mon87°59°0%
- Tue88°61°0%
- Wed92°70°0%
- Thu91°71°0%
- Fri90°71°0%
- Sat85°72°0%
- Sun86°70°1%
- Mon97°72°5%
- Tue97°77°10%
- Wed96°78°3%
- Thu101°80°10%
- Fri99°80°11%
- Sat95°77°3%
- Sun96°77°10%
- Mon99°76°11%
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 Rowland Heights
- 91748
- 91789