AQHI now · Dundas
All cities →1.4
Low health risk
Observed Sun 11:00 AM · Hamilton West
- Today
- 2 Low risk
- Tonight
- 2 Low risk
- Tomorrow
- 2 Low risk
- Tomorrow night
- 2 Low risk
Environment and Climate Change Canada · forecast issued Sun 6:00 AM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.53.2 µg/m³WHO guideline 15
PM103.3 µg/m³WHO guideline 45
NO₂10 µg/m³WHO guideline 25
O₃53 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Dundas
TreesNonenone in the air
GrassLow3 grains/m³
WeedsHigh91 grains/m³ · Ragweed
Mon: weeds high · Tue: weeds high · Wed: weeds high
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.
Particles · next 12 hours
µg/m³| Time | PM2.5 | PM10 |
|---|---|---|
| 12 PM | 3.2 | 3.3 |
| 1 PM | 3.2 | 3.3 |
| 2 PM | 3.5 | 3.6 |
| 3 PM | 3.6 | 3.8 |
| 4 PM | 3.6 | 3.8 |
| 5 PM | 3.4 | 3.6 |
| 6 PM | 3.3 | 3.5 |
| 7 PM | 3.3 | 3.5 |
| 8 PM | 3.4 | 3.6 |
| 9 PM | 3.7 | 3.9 |
| 10 PM | 3.9 | 4 |
| 11 PM | 3.9 | 4 |