Air Quality in Richmond Hill, Canada

Clear
27.6°C · 48.6% humidity
27.6°
Feels 29.5°
65
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
118 10am
118
111
65 1pm
78
87
94 4pm
106
109
112 7pm
107
106
107 10pm
109
110
117 1am
110
111
109 4am
109
109
111 7am
111
108
Station readings
119
126
114
CAMS model adj +84
34
34
27
27
27
27
27
34
34
34
27
25
25
27
27
34
27
27
25
25
25
27
27
24
AD 728×90

Air Quality Index Trend

38h · 1 stn

Richmond Hill's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Richmond Hill is 1.2× the WHO 24-hour guideline of 15 µg/m³.

48.6%
Humidity
31.0 km/h
Wind ESE
1014.5 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
65
18.61 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Richmond Hill?

Temperature & Precipitation

PM2.5 Trend

38h · 1 station
PM2.518.61 µg/m³ ×1.2 WHO
Moderate
PM1084.3 µg/m³
Moderate
UV INDEX12.9
Extreme
AD 300×250
Station readings (2 stations within 25 km)
18.61
Median
29.11
Average
15.0
Low
43.23
High
PM2.5 µg/m³ · Model: 40.72 · Bias: +22.1

What is the 7-day forecast for Richmond Hill?

07-21
27.6° 20.0°
7.94 mm
07-22
23.9° 17.3°
0.56 mm
07-23
19.2° 14.3°
07-24
21.6° 16.7°
07-25
24.6° 13.3°
0.44 mm
07-26
26.5° 19.0°
0.81 mm
07-27
28.2° 19.2°
0.06 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Richmond Hill?

57
NASA GSFC Rutgers Calib. N20
9.4 km PM2.5: 15.0 µg/m³
30
Toronto North, Ontario, Canada
10.1 km PM2.5: 7.2 µg/m³
18
Toronto North, Ontario, Canada
10.1 km PM2.5: 4.3 µg/m³
33
Toronto East, Ontario, Canada
19.0 km PM2.5: 7.9 µg/m³
39
Toronto East, Ontario, Canada
19.0 km PM2.5: 9.4 µg/m³
26
Toronto East, Ontario, Canada
19.0 km PM2.5: 6.2 µg/m³
31
Newmarket, Ontario, Canada
19.6 km PM2.5: 7.4 µg/m³
17
Newmarket, Ontario, Canada
19.6 km PM2.5: 4.1 µg/m³
15
Toronto West, Ontario, Canada
19.9 km PM2.5: 3.6 µg/m³
50
Toronto Downtown, Ontario, Canada
23.5 km PM2.5: 12.0 µg/m³

What cities are near Richmond Hill?

60 Vaughan 63 Newtonbrook East 59 Newtonbrook West 74 Hillcrest Village 58 Westminster-Branson 79 Steeles 61 Willowdale West 71 Bayview Village 66 Willowdale East 78 Don Valley Village
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:23 UTC.