Today | Weather | Sunday, November 1, 2026

Weather in Caldwell, Idaho

09:34 PM
Now
Cloudy Night
45° F
Feels Like 36°
Precipitation 0 %
Wind 14 mph
Humidity 73 %
Today
Cloudy Night
Day 57°
Night 34°
Precipitation 0 %
Wind 12 mph

Caldwell Weather Forecast Updated

47 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 1, 2025)
Cloudy Weather

Day

70°

Night

48°

Wind

4 mph

UV Index

3

Precipitation

0 %

Air Quality in Caldwell

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.52 µg/m³
PM10 1.27 µg/m³
O3 0.041 ppm
NO2 0.5 ppb
SO2 0 ppb
CO 0.11 ppm
NH3 0.15 µg/m³
NO 0 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)
PM2.5 – 0.52 µg/m³
PM10 – 1.27 µg/m³
O3 – 80.86 µg/m³
NO2 – 0.92 µg/m³
SO2 – 0 µg/m³
CO – 121.76 µg/m³
NH3 – 0.15 µg/m³
NO – 0 µg/m³