AQHI now · Forest
All cities →1.8
Low health risk
Observed Thu 9:00 PM · Sarnia
- Tonight
- 2 Low risk
- Tomorrow
- 2 Low risk
- Tomorrow night
- 2 Low risk
Environment and Climate Change Canada · forecast issued Thu 5:00 PM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.52.8 µg/m³WHO guideline 15
PM102.8 µg/m³WHO guideline 45
NO₂8 µg/m³WHO guideline 25
O₃41 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Particles · next 12 hours
µg/m³| Time | PM2.5 | PM10 |
|---|---|---|
| 11 PM | 2.8 | 2.8 |
| 12 AM | 2.4 | 2.4 |
| 1 AM | 1.6 | 1.6 |
| 2 AM | 0.5 | 0.5 |
| 3 AM | 0.1 | 0.1 |
| 4 AM | 0.1 | 0.1 |
| 5 AM | 0.1 | 0.1 |
| 6 AM | 0.2 | 0.2 |
| 7 AM | 0.2 | 0.2 |
| 8 AM | 0.3 | 0.3 |
| 9 AM | 0.3 | 0.3 |
| 10 AM | 0.2 | 0.2 |