AQHI now · Guelph
All cities →2.7
Low health risk
Observed Mon 11:00 PM · Guelph
- Monday night
- 3 Low risk
- Today
- 2 Low risk
- Tonight
- 3 Low risk
Environment and Climate Change Canada · forecast issued Mon 5:00 PM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.55.2 µg/m³WHO guideline 15
PM105.8 µg/m³WHO guideline 45
NO₂8 µg/m³WHO guideline 25
O₃61 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Guelph
TreesNonenone in the air
GrassLow<1 grains/m³
WeedsLow<1 grains/m³ · Ragweed
Wed: weeds low · Thu: grass low · Fri: 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 |
|---|---|---|
| 12 AM | 5.2 | 5.8 |
| 1 AM | 4.7 | 5.5 |
| 2 AM | 4.5 | 5.2 |
| 3 AM | 4.1 | 4.8 |
| 4 AM | 4 | 4.6 |
| 5 AM | 4.1 | 4.7 |
| 6 AM | 4.2 | 4.9 |
| 7 AM | 4.5 | 5.2 |
| 8 AM | 5.1 | 6 |
| 9 AM | 4.9 | 5.6 |
| 10 AM | 4.7 | 5.3 |
| 11 AM | 4.8 | 5.4 |