Today | Weather | Sunday, October 26, 2025

Weather in Frederick, Maryland

10:08 AM
Now
Cloudy Weather
45° F
Feels Like 48°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 2
Humidity 79 %
Today
Cloudy Weather
Day 63°
Night 39°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 3

Frederick Weather Forecast Updated

24 minutes ago
Last updated on

Air Quality in Frederick

NOW
34 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.23 µg/m³
PM10 10.8 µg/m³
O3 0.014 ppm
NO2 5.2 ppb
SO2 0.1 ppb
CO 0.16 ppm
NH3 11.05 µg/m³
NO 2.27 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)
PM2.58.23 µg/m³
PM1010.8 µg/m³
O327.34 µg/m³
NO29.78 µg/m³
SO20.17 µg/m³
CO181.58 µg/m³
NH311.05 µg/m³
NO2.27 µg/m³