AQHI now · Sarnia
All cities →1.5
Low health risk
Observed Thu 4:00 PM · Sarnia
- Today
- 1 Low risk
- Today
- 1 Low risk
- Today
- 1 Low risk
- Today
- 1 Low risk
Environment and Climate Change Canada · forecast issued Thu 6:00 AM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.56.9 µg/m³WHO guideline 15
PM107.5 µg/m³WHO guideline 45
NO₂12 µg/m³WHO guideline 25
O₃62 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 |
|---|---|---|
| 4 PM | 6.9 | 7.5 |
| 5 PM | 6.6 | 7.2 |
| 6 PM | 6 | 6.4 |
| 7 PM | 5 | 5.3 |
| 8 PM | 3.9 | 4 |
| 9 PM | 2.8 | 2.9 |
| 10 PM | 2 | 2.1 |
| 11 PM | 1.4 | 1.5 |
| 12 AM | 1.1 | 1.2 |
| 1 AM | 1 | 1.1 |
| 2 AM | 0.9 | 1 |
| 3 AM | 1 | 1.1 |