Petaluma, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Petaluma weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——76°53°—
- MondayJul 6Foggy——73°52°-3°
- TuesdayJul 7Overcast——82°52°+9°
- WednesdayJul 8Clear——93°50°+11°
- ThursdayJul 9Overcast——94°54°+1°
- FridayJul 10Overcast——97°53°+3°
- SaturdayJul 11Overcast——96°54°-1°
AQI 28 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 4.5 µg/m³ (AQI 25) with a 0.71 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 4.5 µg/m³ (AQI 25) with a 0.71 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.71
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:30 PM
- Moonset
- 11:29 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Petaluma at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 94952, 94954
16-Day Forecast — Petaluma
- Sun76°53°3%
- Mon73°52°2%
- Tue82°52°2%
- Wed93°50°0%
- Thu94°54°0%
- Fri97°53°0%
- Sat96°54°1%
- Sun88°61°0%
- Mon95°64°3%
- Tue99°59°4%
- Wed98°59°0%
- Thu101°55°1%
- Fri105°59°0%
- Sat95°57°0%
- Sun89°55°3%
- Mon93°51°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Petaluma
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 Petaluma
- 94954
- 94952
- 94953