AQHI now · Ajax
All cities →1.3
Low health risk
Observed Sat 1:00 AM · Oshawa
- Friday night
- 2 Low risk
- Today
- 2 Low risk
- Tonight
- 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
PM2.53.8 µg/m³WHO guideline 15
PM103.8 µg/m³WHO guideline 45
NO₂14 µg/m³WHO guideline 25
O₃32 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Ajax
TreesNonenone in the air
GrassNonenone in the air
WeedsLow<1 grains/m³ · Ragweed
Sun: weeds low · Mon: weeds low · Tue: 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 |
|---|---|---|
| 2 AM | 3.8 | 3.8 |
| 3 AM | 3.7 | 3.7 |
| 4 AM | 3.6 | 3.6 |
| 5 AM | 3.6 | 3.6 |
| 6 AM | 3.8 | 3.8 |
| 7 AM | 4.7 | 4.8 |
| 8 AM | 5.8 | 6 |
| 9 AM | 5.8 | 6 |
| 10 AM | 5.1 | 5.2 |
| 11 AM | 4.8 | 4.9 |
| 12 PM | 4.1 | 4.1 |
| 1 PM | 3.4 | 3.4 |