AQHI now · Arthur
All cities →1
Low health risk
Observed Fri 3:00 PM · Guelph
- Today
- 2 Low risk
- Tonight
- 2 Low risk
- Tomorrow
- 2 Low risk
- Tomorrow night
- 1 Low risk
Environment and Climate Change Canada · forecast issued Fri 6:00 AM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.50.9 µg/m³WHO guideline 15
PM100.9 µg/m³WHO guideline 45
NO₂3 µg/m³WHO guideline 25
O₃63 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Arthur
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 |
|---|---|---|
| 4 PM | 0.9 | 0.9 |
| 5 PM | 1.2 | 1.2 |
| 6 PM | 1.5 | 1.5 |
| 7 PM | 1.5 | 1.5 |
| 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 |