AQHI now · Crystal Beach
All cities →1.9
Low health risk
Observed Thu 9:00 PM · St. Catharines
- 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
PM2.56.9 µg/m³WHO guideline 15
PM107 µg/m³WHO guideline 45
NO₂9 µg/m³WHO guideline 25
O₃52 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Crystal Beach
TreesNonenone in the air
GrassNonenone in the air
WeedsLow<1 grains/m³ · Ragweed
Fri: weeds low · Sat: weeds low · Sun: 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 |
|---|---|---|
| 11 PM | 6.9 | 7 |
| 12 AM | 7.5 | 7.7 |
| 1 AM | 8.1 | 8.4 |
| 2 AM | 8.5 | 8.8 |
| 3 AM | 8.4 | 8.7 |
| 4 AM | 8.6 | 8.9 |
| 5 AM | 8.1 | 8.3 |
| 6 AM | 8 | 8.1 |
| 7 AM | 8.7 | 8.8 |
| 8 AM | 9.7 | 9.8 |
| 9 AM | 9.6 | 9.7 |
| 10 AM | 9.6 | 9.7 |