Air Quality in Hercules, United States

Partly Cloudy
20.1°C · 55.0% humidity
20.1°
Feels 20.1°
91
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
34 2pm
34
34
91 5pm
95
83
75 8pm
69
65
62 11pm
60
38
37 2am
36
35
28 5am
28
28
27 8am
34
27
34 11am
34
34
AD 728×90

Air Quality Index Trend

46h · 95 stn

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. Current PM2.5 concentration in Hercules is 2.1× the WHO 24-hour guideline of 15 µg/m³.

55.0%
Humidity
36.0 km/h
Wind SW
1011.1 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
91
30.95 µg/m³
PM10
69
91.15 µg/m³
050100150200300500

What is the weather forecast for Hercules?

Temperature & Precipitation

PM2.5 Trend

46h · 95 stations
PM2.530.95 µg/m³ ×2.1 WHO
Moderate
PM1091.15 µg/m³
Moderate
UV INDEX17.4
Extreme
AD 300×250

What is the 7-day forecast for Hercules?

08-03
22.1° 14.5°
08-04
19.4° 14.4°
08-05
24.1° 14.2°
08-06
22.9° 14.8°
08-07
20.9° 14.9°
08-08
21.5° 14.3°
08-09
25.4° 14.6°
Both models agree Avg diff: 2.4°C

Where are air quality stations near Hercules?

89
San Pablo-Rumrill, Contra Costa, California
8.7 km PM2.5: 30.2 µg/m³
30
Vallejo, Solano, California
10.5 km PM2.5: 7.2 µg/m³
26
Vallejo, Solano, California
10.5 km PM2.5: 6.2 µg/m³
18
Vallejo, Solano, California
10.5 km PM2.5: 4.3 µg/m³
22
A882RZTJ
12.7 km PM2.5: 5.3 µg/m³
25
AK80QP18
13.0 km PM2.5: 5.9 µg/m³
32
Berkeley-Martinez 1
13.5 km PM2.5: 7.7 µg/m³
28
Martinez 3
15.4 km PM2.5: 6.7 µg/m³
62
Lawrence Hall of Science
15.8 km PM2.5: 17.2 µg/m³
31
Lawrence Hall of Science
15.8 km PM2.5: 7.5 µg/m³

What cities are near Hercules?

91 Pinole 91 San Pablo 91 Vallejo 4 El Cerrito 96 Benicia 96 Martinez 4 Berkeley 91 American Canyon 96 Orinda 68 Pleasant Hill
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T00:55 UTC.