Today | Weather | Saturday, October 31, 2026

Weather in Boise, Idaho

04:44 AM
Now
Rainy Weather
43° F
Feels Like 37°
Precipitation 50 %
Wind 6 mph
Humidity 88 %
Today
Rainy Weather
Day 61°
Night 45°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 1

Boise Weather Forecast Updated

23 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 31, 2025)
Cloudy Night

Day

61°

Night

39°

Wind

6 mph

Precipitation

25 %

Air Quality in Boise

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.96 µg/m³
PM10 1.65 µg/m³
O3 0.024 ppm
NO2 1 ppb
SO2 0 ppb
CO 0.10 ppm
NH3 0.64 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 – 0.96 µg/m³
PM10 – 1.65 µg/m³
O3 – 48.03 µg/m³
NO2 – 1.81 µg/m³
SO2 – 0 µg/m³
CO – 114.43 µg/m³
NH3 – 0.64 µg/m³
NO – 0 µg/m³