Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Ancaster
Air quality index (AQI) and PM2.5 air pollution in Ancaster
13.5K people follow this city
Ancaster Air Quality Map
Real-time Ancaster air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Ancaster today?
 | Index | None | |
 | Tree pollen | None | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ancaster?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 60% |
| Wind | 2 mp/h |
| Pressure | 29.7 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Hamilton, Ontario | 41 |
| 2 | Valemount, British Columbia | 40 |
| 3 | Kitchener, Ontario | 37 |
| 4 | Fort St John, British Columbia | 35 |
| 5 | Chetwynd, British Columbia | 33 |
| 6 | Gibbons, Alberta | 33 |
| 7 | Sherwood Park, Alberta | 33 |
| 8 | Lethbridge, Alberta | 32 |
| 9 | Gatineau, Quebec | 31 |
| 10 | Levis, Quebec | 31 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Spotlight
There are emissions coming from the Stelco Hamilton Works steel fabrication facility. Protect yourself from PM2.5 and other industrial pollutants and follow health recommendations. Click here.
US AQI
43*
live AQI index
Good
Overview
What is the current air quality in Ancaster?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 43* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.8*µg/m³ | |
!
PM2.5
x1.6
PM2.5 concentration in Ancaster is currently 1.6 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Ancaster?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Ancaster air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 43 AQI US |  100% | 73.4° 50° |  22.4 mp/h |
| Wednesday, May 8 | Good 26 AQI US | 100% | 53.6° 48.2° | 13.4 mp/h |
| Thursday, May 9 | Good 38 AQI US | 100% | 59° 46.4° | 8.9 mp/h |
| Friday, May 10 | Good 18 AQI US | 90% | 53.6° 42.8° | 8.9 mp/h |
| Saturday, May 11 | Good 28 AQI US | 100% | 53.6° 44.6° | 8.9 mp/h |
| Sunday, May 12 | Good 45 AQI US | 30% | 64.4° 42.8° | 8.9 mp/h |
| Monday, May 13 | Moderate 55 AQI US  | 20% | 69.8° 51.8° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Ancaster?
No locations are available.
AQI US, Metric