Toggle navigation
Places
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
North America
United States
Maryland
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Maryland
United States
2026-01-21 01:00
AQI (US)
Good
Pollutants
|
Pollens
PM2.5
μg/m³
5.1
O3
μg/m³
51.2
PM10
μg/m³
20.1
NO2
μg/m³
33.2
CO
μg/m³
187.5
SO2
μg/m³
1
Pollen
0.2
Weather
℃
℃
℉
-7℃
54%
0 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
Pollen
PM2.5
O3
PM10
NO2
CO
SO2
Places included
Allegany County
AQI 32
Anne Arundel County
AQI 33
Baltimore
AQI 34
Baltimore County
AQI 48
Calvert County
AQI 52
Caroline County
AQI 23
Carroll County
AQI 26
Cecil County
AQI 58
Charles County
AQI 20
Dorchester County
AQI 28
Frederick County
AQI 64
Garrett County
AQI 17
Harford County
AQI 52
Howard County
AQI 20
Kent County
AQI 40
Montgomery County
AQI 45
Prince George's County
AQI 23
Queen Anne's County
AQI 27
Somerset County
AQI 23
St. Mary's County
AQI 52
Talbot County
AQI 15
Washington County
AQI 34
Wicomico County
AQI 31
Worcester County
AQI 22
Data Sources
http://www.airnow.gov/
Get the App
Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.
iPhone, iPad
Android
Scan QR Code to Download App
iOS
Google Play
Download APK
Cities Nearby
Millersville
AQI 12
Arden-on-the-Severn
AQI 20
Herald Harbor
AQI 20
Crofton
AQI 34
Odenton
AQI 12
Severna Park
AQI 20
Pasadena
AQI 20
Fort Meade
AQI 12
Parole
AQI 34
Severn
AQI 20
Bowie
AQI 34
Air Matters © 2026