What is the air quality in Caldwell today?

The current Air Quality Index (AQI) in Caldwell is 25 (Good). PM2.5 concentration is 6.0 µg/m³.

What is the temperature in Caldwell right now?

The current temperature in Caldwell is 28.5°C (feels like 28.5°C). Humidity is 15.6% and wind speed is 12.9 km/h.

Is it safe to go outside in Caldwell?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Caldwell, United States

Clear

28.5°C · 15.6% humidity

28.5°

Feels 28.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

27 8am

25 11am

25 2pm

25 5pm

25 8pm

25 11pm

25 2am

25 5am

Air Quality Index Trend

39h · 1 stn

View full history →

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

15.6%

Humidity

12.9 km/h

Wind NW

1016.4 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Caldwell?

Temperature & Precipitation

PM2.5 Trend

39h · 1 station

PM2.56.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX10.9

Extreme

Both models agree Avg diff: 5.8°C

What cities are near Caldwell?

25 Nampa 25 Meridian 25 Eagle 25 Kuna 25 Boise 38 Twin Falls 20 Pendleton 18 Walla Walla 24 Hermiston 21 Kennewick

Get AQI alerts for Caldwell

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

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T17:11 UTC.