What is the air quality in Hercules today?

The current Air Quality Index (AQI) in Hercules is 23 (Good). PM2.5 concentration is 5.4 µg/m³.

What is the temperature in Hercules right now?

The current temperature in Hercules is 20.4°C (feels like 20.4°C). Humidity is 43.8% and wind speed is 17.4 km/h.

Is it safe to go outside in Hercules?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Hercules, United States

Clear

20.4°C · 43.8% humidity

20.4°

Feels 20.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

39 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

46h · 103 stn

View full history →

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

43.8%

Humidity

17.4 km/h

Wind WSW

1018.7 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.4 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Hercules?

Temperature & Precipitation

PM2.5 Trend

46h · 103 stations

PM2.55.4 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (39 stations within 25 km)

5.4

Median

4.78

Average

2.39

Low

8.9

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.6

What is the 7-day forecast for Hercules?

10-20

24.2° 15.5°

10-21

21.9° 14.7°

10-22

25.0° 15.6°

10-23

22.2° 16.0°

10-24

22.2° 14.4°

10-25

21.5° 14.7°

3.38 mm

10-26

22.1° 15.4°

Both models agree Avg diff: 4.3°C

Where are air quality stations near Hercules?

San Pablo-Rumrill, Contra Costa, California

8.7 km PM2.5: 8.9 µg/m³

San Pablo-Rumrill, Contra Costa, California

8.7 km PM2.5: 7.2 µg/m³

Vallejo, Solano, California

10.5 km PM2.5: 6.5 µg/m³

Berkeley-Martinez 1

13.5 km PM2.5: 3.6 µg/m³

Martinez 3

15.4 km PM2.5: 3.2 µg/m³

Lawrence Hall of Science

15.8 km PM2.5: 3.8 µg/m³

Stanley Hall

16.2 km PM2.5: 4.8 µg/m³

VLSB

16.4 km PM2.5: 4.4 µg/m³

Crossroads

16.9 km PM2.5: 4.8 µg/m³

Berkeley-Aquatic Park, Alameda, California

17.0 km PM2.5: 7.2 µg/m³

What cities are near Hercules?

23 Pinole 32 San Pablo 27 Vallejo 21 El Cerrito 18 Benicia 15 Martinez 19 Berkeley 24 American Canyon 19 Orinda 21 Pleasant Hill

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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 2026-10-20T20:55 UTC.