AQHI now · Acton
All cities →1.4
Low health risk
Observed Fri 8:00 PM · Milton
- Tonight
- 2 Low risk
- Tomorrow
- 2 Low risk
- Tomorrow night
- 2 Low risk
Environment and Climate Change Canada · forecast issued Fri 5:00 PM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.51.5 µg/m³WHO guideline 15
PM101.5 µg/m³WHO guideline 45
NO₂8 µg/m³WHO guideline 25
O₃48 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Acton
TreesNonenone in the air
GrassNonenone in the air
WeedsLow<1 grains/m³ · Ragweed
Sat: weeds low · Sun: weeds low · Mon: weeds low
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 |
|---|---|---|
| 8 PM | 1.5 | 1.5 |
| 9 PM | 1.6 | 1.7 |
| 10 PM | 1.9 | 1.9 |
| 11 PM | 2 | 2.1 |
| 12 AM | 2.1 | 2.2 |
| 1 AM | 3.4 | 3.4 |
| 2 AM | 4.5 | 4.5 |
| 3 AM | 5 | 5 |
| 4 AM | 5.4 | 5.4 |
| 5 AM | 5.5 | 5.5 |
| 6 AM | 5.5 | 5.5 |
| 7 AM | 5.7 | 5.7 |