Air Quality in Caldwell, United States
Windy
33.5°C · 11.7% humidity
33.5°
Feels 33.5°
146
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Caldwell's air quality — share it
AQI Forecast
146
2pm
146
146
146
5pm
128
116
106
8pm
99
95
91
11pm
89
88
149
2am
148
148
147
5am
147
85
84
8am
84
84
83
11am
83
66
Air Quality Index Trend
40h · 1 stnCaldwell'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 Caldwell is 3.6× the WHO 24-hour guideline of 15 µg/m³.
11.7%
Humidity
42.4 km/h
Wind WNW
1006.5 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
53.7 µg/m³
PM10
154.9 µg/m³
050100150200300500
What is the weather forecast for Caldwell?
Temperature & Precipitation
PM2.5 Trend
40h · 1 stationPM2.553.7 µg/m³
×3.6 WHO
Unhealthy for sensitive groups
PM10154.9 µg/m³
Unhealthy for sensitive groups
UV INDEX9.4
Very High
What is the 7-day forecast for Caldwell?
08-03
43.9° 21.0°
08-04
38.9° 21.4°
08-05
42.0° 22.5°
08-06
39.0° 18.7°
08-07
37.6° 19.4°
08-08
40.1° 18.5°
08-09
39.2° 18.4°
Both models agree
Avg diff: 3.6°C
What cities are near Caldwell?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:06 UTC.