Today | Weather | Tuesday, April 7, 2026

Weather in Caldwell, Idaho

07:40 AM
Now
Cloudy Weather
45° F
Feels Like 46°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 1
Humidity 78 %
Today
Cloudy Weather
Day 79°
Night 43°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 6

Caldwell Weather Forecast Updated

9 minutes ago
Last updated on

Air Quality in Caldwell

NOW
28 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.38 µg/m³
PM10 2.87 µg/m³
O3 0.030 ppm
NO2 0.9 ppb
SO2 0 ppb
CO 0.11 ppm
NH3 15.28 µg/m³
NO 0.01 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.38 µg/m³
PM102.87 µg/m³
O359.17 µg/m³
NO21.65 µg/m³
SO20.01 µg/m³
CO126.8 µg/m³
NH315.28 µg/m³
NO0.01 µg/m³