Pomona, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Pomona weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——90°65°—
- MondayJul 6Clear——90°59°0°
- TuesdayJul 7Clear——91°62°+1°
- WednesdayJul 8Clear——94°73°+3°
- ThursdayJul 9Clear——95°75°+1°
- FridayJul 10Clear——91°73°-4°
- SaturdayJul 11Overcast——91°72°0°
AQI 50 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.9 µg/m³ (AQI 62) with a 0.80 fine-to-coarse ratio and 6 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 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 45 around 1 PM.
- Present
- AQI 33
- UV peak
- 10.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 45
PM × Wind × Precip
PM2.5 at 14.9 µg/m³ (AQI 62) with a 0.80 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.80
- 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
- 11:07 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Pomona at a glance
- Today vs. normal: 79°F — typical for the season
- 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 codes: 91766, 91767, 91768
16-Day Forecast — Pomona
- Sun88°65°1%
- Mon90°59°1%
- Tue91°62°0%
- Wed94°73°0%
- Thu95°75°0%
- Fri91°73°0%
- Sat91°72°1%
- Sun92°73°1%
- Mon93°73°5%
- Tue92°72°11%
- Wed99°78°5%
- Thu99°80°10%
- Fri108°84°10%
- Sat110°87°10%
- Sun95°82°19%
- Mon96°78°19%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Pomona
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 Pomona
- 91768
- 91766
- 91767
- 91769