What is the air quality in Hercules today?

The current Air Quality Index (AQI) in Hercules is 16 (Good). PM2.5 concentration is 3.9 µg/m³.

What is the temperature in Hercules right now?

The current temperature in Hercules is 18.4°C (feels like 18.4°C). Humidity is 49.4% and wind speed is 15.6 km/h.

Is it safe to go outside in Hercules?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 12.9 (Extreme).

Air Quality in Hercules, United States

Clear

18.4°C · 49.4% humidity

18.4°

Feels 18.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

34 stations

Nearby Monitoring Stations

AQI Forecast

27 9am

16 12pm

23 3pm

26 6pm

26 9pm

27 12am

27 3am

27 6am

Air Quality Index Trend

46h · 101 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.

49.4%

Humidity

15.6 km/h

Wind WSW

1013.4 hPa

Pressure

12.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.9 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Hercules?

Temperature & Precipitation

PM2.5 Trend

46h · 101 stations

PM2.53.9 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX12.9

Extreme

Station readings (34 stations within 25 km)

3.9

Median

3.84

Average

2.23

Low

15.0

High

PM2.5 µg/m³ · Model: 6.25 · Bias: +2.3

What is the 7-day forecast for Hercules?

05-29

22.6° 13.5°

05-30

18.7° 13.8°

05-31

21.6° 15.8°

0.06 mm

06-01

24.1° 14.4°

06-02

19.6° 11.9°

06-03

24.9° 10.2°

06-04

24.9° 11.7°

Both models agree Avg diff: 2.4°C

Where are air quality stations near Hercules?

A6LHM5BD

8.2 km PM2.5: 2.9 µg/m³

AGJLDGLM

9.2 km PM2.5: 5.1 µg/m³

AJ08LDN1

9.6 km PM2.5: 5.8 µg/m³

A8JYY391

10.4 km PM2.5: 4.7 µg/m³

Vallejo, Solano, California

10.5 km PM2.5: 6.2 µg/m³

Vallejo, Solano, California

10.5 km PM2.5: 7.2 µg/m³

AL9FR71M

10.7 km PM2.5: 5.5 µg/m³

AFYDTNFN

10.9 km PM2.5: 4.6 µg/m³

ACSRLHYF

11.5 km PM2.5: 3.8 µg/m³

A6Z53721

11.8 km PM2.5: 4.3 µg/m³

What cities are near Hercules?

16 Pinole 15 San Pablo 23 Vallejo 17 El Cerrito 15 Benicia 14 Martinez 17 Berkeley 21 American Canyon 15 Orinda 19 Pleasant Hill

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-05-29T19:39 UTC.