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Today | Weather | Tuesday, December 30, 2025
Active Weather Warnings

Weather in Meridian, Idaho

05:35 PM
Now
Cloudy Night
37° F
Feels Like 36°
Precipitation 0 %
Wind 6 mph
Humidity 64 %
Today
Cloudy Weather
Day 46°
Night 21°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2

Meridian Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 30, 2024)
Cloudy Weather

Day

41°

Night

23°

Wind

4 mph

UV Index

2

Precipitation

2 %

Air Quality in Meridian

NOW
20 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.86 µg/m³
PM10 3.41 µg/m³
O3 0.022 ppm
NO2 2.5 ppb
SO2 0 ppb
CO 0.13 ppm
NH3 0.52 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)
PM2.5 – 1.86 µg/m³
PM10 – 3.41 µg/m³
O3 – 42.8 µg/m³
NO2 – 4.66 µg/m³
SO2 – 0.06 µg/m³
CO – 152.43 µg/m³
NH3 – 0.52 µg/m³
NO – 0.01 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Meridian

Moderate Expected Likely

Air Stagnation Advisory

Air Stagnation Advisory issued December 30 at 1:25PM MST until January 3 at 8:00AM MST by NWS Boise ID
Dec 30, 1:25 PM → Jan 3, 8:00 AM
WHAT: A 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 southwest Idaho and southeast Oregon.

WHEN: Until 8 AM MST /7 AM PST/ Saturday.

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 30, 4:14 PM Source: NWS Alert