Outdoor conditions in

Alto

California
Now
  1. 51°Sunny0% rain79% humidityGusts 3 mph
  2. 51°Sunny0% rain79% humidityGusts 5 mph
  3. 52°Sunny0% rain78% humidityGusts 6 mph
  4. 58°Sunny0% rain69% humidityGusts 7 mph
  5. 65°Sunny0% rain54% humidityGusts 10 mph
  6. 70°Sunny0% rain46% humidityGusts 12 mph
  7. 75°Sunny0% rain38% humidityGusts 9 mph
  8. 82°Sunny0% rain31% humidityGusts 7 mph
  9. 85°Sunny0% rain28% humidityGusts 5 mph
  10. 87°Sunny0% rain26% humidityGusts 3 mph
  11. 88°Sunny0% rain26% humidityGusts 2 mph
  12. 88°Sunny0% rain26% humidityGusts 2 mph
  13. 84°Clear0% rain30% humidityGusts 2 mph
  14. 79°Clear0% rain36% humidityGusts 2 mph
  15. 71°Clear0% rain42% humidityGusts 2 mph
  16. 67°Clear0% rain47% humidityGusts 1 mph
  17. 65°Clear0% rain51% humidityWind unavailable
  18. 63°Clear0% rain53% humidityWind unavailable
  19. 62°Clear0% rain55% humidityWind unavailable
  20. 61°Clear0% rain56% humidityGusts 1 mph
  21. 60°Clear0% rain56% humidityGusts 1 mph
  22. 60°Clear0% rain55% humidityGusts 1 mph
  23. 59°Clear0% rain54% humidityGusts 2 mph
  24. 58°Clear0% rain54% humidityGusts 6 mph
Extra care for

A little farther out

The next five days

Today

Today looks fairly quiet.

Rain
0%
Humidity
26–80%
Wind
12 mph
Fri

Friday looks fairly quiet.

Rain
0%
Humidity
22–56%
Wind
9 mph
Sat

Saturday looks fairly quiet.

Rain
0%
Humidity
28–75%
Wind
2 mph
Sun

Sunday looks fairly quiet.

Rain
0%
Humidity
61–97%
Wind
14 mph
Mon

Monday looks fairly quiet.

Rain
7%
Humidity
60–99%
Wind
24 mph
  1. 88° / 51°Today looks fairly quiet.0% rain · Humidity 26–80% · Wind 12 mph
  2. 91° / 58°Friday looks fairly quiet.0% rain · Humidity 22–56% · Wind 9 mph
  3. 88° / 56°Saturday looks fairly quiet.0% rain · Humidity 28–75% · Wind 2 mph
  4. 71° / 53°Sunday looks fairly quiet.0% rain · Humidity 61–97% · Wind 14 mph
  5. 65° / 49°Monday looks fairly quiet.7% rain · Humidity 60–99% · Wind 24 mph

Environmental watch

Air quality + smoke

Air quality

San Rafael area · Updated Thu 5:25 AM
11GoodUS AQI

Good through 12 PM.

Sky check

No plume detected overhead

Satellite view · Updated Thu 5:45 AM

Air near ground11 · Good US AQI

Rain, in motion · Past four hours

Alto radar

Ready when you areSee what is moving toward Alto.

Watch the last four hours of rain, then search any nearby trail, lake, or address.

View the official forecast ↗

Outdoor fire check

Thinking about a backyard fire?

Lower-concern hours fall overnight.

No lower-concern three-hour stretch between 9 AM and 11 PM appears in this outlook.

Next 12 hoursChoose a time to see what is driving the concern.
Selected timeNowLower weather concern

Humidity is 79% with light wind and gusts below 4 mph.

Humidity
79%
Wind
2 mph
Gusts
3 mph

Check local rules. Weather is only part of the decision. Check city, county, and land-manager fire restrictions before lighting any outdoor fire.

Nearby regional view

Explore Oakland

About 19 miles away, the Oakland hub looks more deeply at Oakland, CA. It reflects that wider area rather than Alto’s exact conditions.

About these readingsSources and local limits

Weather

Forecasts, alerts, and radar come from NOAA and the National Weather Service.

Air quality

This reading describes San Rafael area, about 4 miles away. Conditions can differ at this exact spot.

Smoke

Satellite imagery shows smoke overhead. It cannot tell us how much smoke has reached breathing level.

This page represents Alto, CA, so conditions can vary from street to street. Environmental data: AirNow · participating air agencies · preliminary real-time US AQI · NOAA Hazard Mapping System · satellite-observed smoke.