Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Greenhill
Air quality index (AQI) and PM2.5 air pollution in Greenhill
1.6K people follow this city
Greenhill Air Quality Map
Real-time Greenhill air pollution map
AIR QUALITY DATA CONTRIBUTORS
Breathe London
See all
Pollen
What is the pollen count in Greenhill today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Greenhill?
| Weather | Clear sky |
| Temperature | 62.6°F |
| Humidity | 76% |
| Wind | 5.7 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time United Kingdom city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Luton, England | 78 |
| 2 | Birmingham, England | 70 |
| 3 | Dundee, Scotland | 69 |
| 4 | Stevenage, England | 68 |
| 5 | Iver, England | 65 |
| 6 | Middlesbrough, England | 64 |
| 7 | Bedford, England | 63 |
| 8 | Edinburgh, Scotland | 63 |
| 9 | Pontypridd, Wales | 63 |
| 10 | Reading, England | 63 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Greenhill aqi ranking
Real-time Greenhill air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | High Street Wealdstone | 56 |
| 2 | St Jerome Bilingual School, Station Road | 55 |
| 3 | St.Luke's Hospice | 55 |
(local time)
SEE WORLD AQI RANKING
US AQI
55
live AQI index
Moderate
Overview
What is the current air quality in Greenhill?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 55 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 11µg/m³ | |
| NO2 | 13µg/m³ | |
!
PM2.5
x2.2
PM2.5 concentration in Greenhill is currently 2.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Greenhill?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Greenhill air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 15 | Good 29 AQI US  |  | 66.2° 51.8° |  8.9 mp/h |
| Thursday, May 16 | Good 50 AQI US |  | 59° 51.8° | 6.7 mp/h |
| Friday, May 17 | Good 45 AQI US | | 68° 50° | 2.2 mp/h |
| Today | Moderate 55 AQI US | 90% | 64.4° 51.8° | 6.7 mp/h |
| Sunday, May 19 | Moderate 57 AQI US |  | 68° 48.2° | 11.2 mp/h |
| Monday, May 20 | Good 50 AQI US | | 64.4° 46.4° | 11.2 mp/h |
| Tuesday, May 21 | Good 41 AQI US | | 62.6° 46.4° | 6.7 mp/h |
| Wednesday, May 22 | Moderate 61 AQI US | 100% | 57.2° 53.6° | 8.9 mp/h |
| Thursday, May 23 | Good 41 AQI US | 90% | 64.4° 50° | 11.2 mp/h |
| Friday, May 24 | Good 23 AQI US | 80% | 64.4° 48.2° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Greenhill air quality data attribution
1Contributor
- Breathe London
3 stations
Non-profit organization Contributor
Where is the cleanest air quality in Greenhill?
AQI US, Metric