Today | Weather | Sunday, December 14, 2025
Active Weather Warnings

Weather in Meridian, Idaho

05:59 AM
Now
Cloudy Night
28° F
Feels Like 27°
Precipitation 0 %
Wind 6 mph
Humidity 93 %
Today
Sunny Weather
Day 48°
Night 27°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 2

Meridian Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Snowy Weather

Day

48°

Night

30°

Wind

7 mph

Precipitation

100 %

Air Quality in Meridian

NOW
20 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.02 µg/m³
PM10 3.9 µg/m³
O3 0.021 ppm
NO2 2 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.23 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)
PM2.53.02 µg/m³
PM103.9 µg/m³
O342.19 µg/m³
NO23.74 µg/m³
SO20.17 µg/m³
CO114.53 µg/m³
NH30.23 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Meridian

Moderate Expected Likely

Air Stagnation Advisory

Air Stagnation Advisory issued December 14 at 4:17AM MST until December 16 at 5:00AM MST by NWS Boise ID
Dec 14, 4:17 AM Dec 16, 5:00 AM
WHAT: An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.

WHERE: Portions of south central and southwest Idaho and
northeast and southeast Oregon.

WHEN: Until 5 AM MST /4 AM PST/ Tuesday.

IMPACTS: Poor air quality may cause issues for people with
respiratory problems.
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Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air.
Updated: Dec 14, 4:46 AM Source: NWS Alert