AQHI now · Guelph
All cities →1.8
Low health risk
Observed Fri 6:00 PM · Guelph
- 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
PM2.52.9 µg/m³WHO guideline 15
PM103 µg/m³WHO guideline 45
NO₂6 µg/m³WHO guideline 25
O₃67 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Guelph
TreesNonenone in the air
GrassModerate8 grains/m³
WeedsHigh164 grains/m³ · Ragweed
Sat: weeds high · Sun: weeds high · Mon: weeds high
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 |
|---|---|---|
| 7 PM | 2.9 | 3 |
| 8 PM | 3 | 3.2 |
| 9 PM | 3 | 3.1 |
| 10 PM | 3 | 3.1 |
| 11 PM | 3.1 | 3.3 |
| 12 AM | 3.3 | 3.4 |
| 1 AM | 3.4 | 3.5 |
| 2 AM | 3.4 | 3.5 |
| 3 AM | 3.4 | 3.5 |
| 4 AM | 3.4 | 3.4 |
| 5 AM | 3.3 | 3.4 |
| 6 AM | 3.2 | 3.3 |