Today | Weather | Monday, January 19, 2026
Active Weather Warnings

Weather in Meridian, Idaho

07:05 PM
Now
Cloudy Night
28° F
Feels Like 25°
Precipitation 0 %
Wind 6 mph
Humidity 88 %
Today
Cloudy Weather
Day 32°
Night 23°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 1

Meridian Weather Forecast Updated

14 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 19, 2025)
Cloudy Weather

Day

36°

Night

16°

Wind

4 mph

UV Index

1

Precipitation

0 %

Air Quality in Meridian

NOW
28 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.89 µg/m³
PM10 7.94 µg/m³
O3 0.030 ppm
NO2 1.2 ppb
SO2 0 ppb
CO 0.13 ppm
NH3 0.57 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)
PM2.55.89 µg/m³
PM107.94 µg/m³
O359.85 µg/m³
NO22.18 µg/m³
SO20.01 µg/m³
CO145.45 µg/m³
NH30.57 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Meridian

Moderate Expected Likely

Air Stagnation Advisory

Air Stagnation Advisory issued January 19 at 10:39AM MST until January 22 at 11:00AM MST by NWS Boise ID
Jan 19, 10:39 AM Jan 22, 11:00 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 southwest Idaho and northeast and southeast
Oregon.

WHEN: Until 11 AM MST /10 AM PST/ Thursday.

IMPACTS: Poor air quality may cause issues for people with
respiratory problems.
+ Read More
Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air.
Updated: Jan 19, 6:50 PM Source: NWS Alert