Toggle navigation
Places
CAQI (Europe)
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
Greater London
London Borough of Harrow
Headstone
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Headstone
London Borough of Harrow, Greater London
2026-03-09 19:00
CAQI (Europe)
Medium
Pollutants
|
Pollens
PM2.5
μg/m³
38
PM10
μg/m³
48
Alder
9.0
Ragweed
0
Mugwort
0
Birch
0
Olive Tree
0
Grasses
0
Weather
℃
℃
℉
10℃
89%
9 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
CAQI (Europe)
CAQI (Europe)
Allergy Risk
PM2.5
PM10
Alder
Ragweed
Mugwort
Birch
Olive Tree
Grasses
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
Headstone
AQI 58
North Harrow
AQI 58
Wealdstone North
AQI 58
Marlborough
AQI 58
Wealdstone South
AQI 58
Pinner South
AQI 59
Hatch End
AQI 58
West Harrow
AQI 55
Pinner
AQI 58
Harrow Weald
AQI 58
Greenhill
AQI 58
Air Matters © 2026