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
Europe
United Kingdom
England
Hertfordshire
Saint Albans District
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Saint Albans District
Hertfordshire
2026-05-14 09:00
AQI (US)
Good
Pollutants
|
Pollens
PM2.5
μg/m³
3.4
PM10
μg/m³
6
Grasses
3.1
Birch
0.9
Alder
0.6
Ragweed
0
Mugwort
0
Olive Tree
0
Weather
℃
℃
℉
9℃
79%
20 kph
3 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
Allergy Risk
PM2.5
PM10
Grasses
Birch
Alder
Ragweed
Mugwort
Olive Tree
Places included
Batchwood
AQI 17
Bernards Heath
AQI 17
Clarence
AQI 17
Colney Heath
AQI 17
Cunningham
AQI 17
Harpenden
AQI 23
Harpenden East
AQI 23
Harpenden North & Rural
AQI 23
Harpenden Rural
AQI 23
Harpenden South
AQI 23
Harpenden West
AQI 23
Hill End
AQI 17
London Colney
AQI 17
Marshalswick East & Jersey Farm
AQI 17
Marshalswick West
AQI 17
Park Street
AQI 17
Redbourn
AQI 23
Redbourn Civil Parish
AQI 23
Saint Michael
AQI 17
Saint Stephen
AQI 17
Sandridge
AQI 17
Sandridge & Wheathampstead
AQI 23
Sopwell
AQI 17
St Albans
AQI 17
St Peters
AQI 17
St Stephen
AQI 17
Verulam
AQI 17
Wheathampstead
AQI 23
Data Sources
http://uk-air.defra.gov.uk/
http://www.polleninfo.org
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
Harpenden South
AQI 23
Redbourn
AQI 23
Harpenden West
AQI 23
Batchwood
AQI 17
Bernards Heath
AQI 17
Harpenden North & Rural
AQI 23
Harpenden
AQI 23
Sandridge
AQI 17
Marshalswick West
AQI 17
Sandridge & Wheathampstead
AQI 23
Harpenden East
AQI 23
Air Matters © 2026