What is the air quality in San Lorenzo today?

The current Air Quality Index (AQI) in San Lorenzo is 12 (Good). PM2.5 concentration is 2.82 µg/m³.

What is the temperature in San Lorenzo right now?

The current temperature in San Lorenzo is 10.8°C (feels like 10.8°C). Humidity is 91.9% and wind speed is 27.6 km/h.

Is it safe to go outside in San Lorenzo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in San Lorenzo, United States

Overcast

10.8°C · 91.9% humidity

10.8°

Feels 10.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

80 stations

Nearby Monitoring Stations

AQI Forecast

27 4am

12 7am

18 10am

22 1pm

24 4pm

25 7pm

25 10pm

25 1am

Air Quality Index Trend

48h · 1 stn

View full history →

San Lorenzo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

91.9%

Humidity

27.6 km/h

Wind SW

1015.6 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

2.82 µg/m³

PM10▲

13.7 µg/m³

050100150200300500

What is the weather forecast for San Lorenzo?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station

PM2.52.82 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (80 stations within 25 km)

2.82

Median

2.95

Average

1.16

Low

12.55

High

PM2.5 µg/m³ · Model: 6.25 · Bias: +3.4

Both models agree Avg diff: 4.9°C

Where are air quality stations near San Lorenzo?

Madison Park Academy HS

7.1 km PM2.5: 2.2 µg/m³

Lifers 105th

7.3 km PM2.5: 2.3 µg/m³

Esperanza ES

7.8 km PM2.5: 2.6 µg/m³

Lifers 98th

8.3 km PM2.5: 3.6 µg/m³

Oakland - East, Alameda, California

8.3 km PM2.5: 7.2 µg/m³

Oakland - East, Alameda, California

8.3 km PM2.5: 6.0 µg/m³

Brookfield ES

8.4 km PM2.5: 2.6 µg/m³

Elmhurst United MS

8.5 km PM2.5: 2.9 µg/m³

Grass Valley ES

8.8 km PM2.5: 3.2 µg/m³

Highland Community ES

9.5 km PM2.5: 2.4 µg/m³

What cities are near San Lorenzo?

12 Hayward 12 Castro Valley 12 San Leandro 12 Alameda 10 Foster City 12 Moraga 12 San Ramon 12 Oakland 9 San Mateo 8 Belmont

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T14:36 UTC.