Today | Weather | Wednesday, March 18, 2026

Weather in Meriden, Connecticut

05:49 AM
Now
Cloudy Night
23° F
Feels Like 18°
Precipitation 0 %
Wind 7 mph
Humidity 53 %
Today
Cloudy Weather
Day 37°
Night 21°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 5
Overnight Frost 6 AM – 6 AM
Tomorrow Morning Frost 12 AM – 6 AM

Meriden Weather Forecast Updated

25 minutes ago
Last updated on

Air Quality in Meriden

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.03 µg/m³
PM10 2.5 µg/m³
O3 0.049 ppm
NO2 3.7 ppb
SO2 1 ppb
CO 0.15 ppm
NH3 0.42 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)
PM2.51.03 µg/m³
PM102.5 µg/m³
O395.84 µg/m³
NO26.91 µg/m³
SO22.56 µg/m³
CO169.25 µg/m³
NH30.42 µg/m³
NO0 µg/m³