Air Quality in Westchester, United States

Partly Cloudy
25.1°C · 51.2% humidity
25.1°
Feels 25.1°
50
Good
Air quality is satisfactory. Enjoy outdoor activities.
216 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
16 3pm
16
16
50 6pm
40
36
31 9pm
27
25
21 12am
19
27
59 3am
75
76
76 6am
74
45
74 9am
75
137
137 12pm
137
137
Station readings
8
CAMS model adj -9
25
25
25
24
24
27
27
27
27
25
25
34
66
83
84
84
83
54
83
84
146
146
146
146
AD 728×90

Air Quality Index Trend

42h · 1 stn

Westchester's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

51.2%
Humidity
36.2 km/h
Wind NE
1014.3 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
50
11.97 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Westchester?

Temperature & Precipitation

PM2.5 Trend

42h · 1 station
PM2.511.97 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (216 stations within 25 km)
11.97
Median
11.95
Average
2.02
Low
24.76
High
PM2.5 µg/m³ · Model: 9.75 · Bias: -2.2

What is the 7-day forecast for Westchester?

07-21
28.2° 23.4°
0.81 mm
07-22
26.7° 21.3°
07-23
25.1° 18.5°
3.56 mm
07-24
28.1° 19.9°
07-25
23.8° 19.7°
0.13 mm
07-26
29.2° 22.9°
3.13 mm
07-27
27.2° 21.5°
1.06 mm
Both models agree Avg diff: 3.6°C

Where are air quality stations near Westchester?

48
Austin 6
9.4 km PM2.5: 11.5 µg/m³
48
Garfield Ridge 4
9.7 km PM2.5: 11.4 µg/m³
46
Austin 7
9.7 km PM2.5: 11.0 µg/m³
44
Garfield Ridge 3
10.5 km PM2.5: 10.6 µg/m³
45
Austin 8
10.6 km PM2.5: 10.8 µg/m³
48
Montclare 2
10.6 km PM2.5: 11.6 µg/m³
50
Clearing 1
10.7 km PM2.5: 11.9 µg/m³
44
Austin 5
10.8 km PM2.5: 10.5 µg/m³
44
Austin 9
10.9 km PM2.5: 10.6 µg/m³
47
Austin 4
11.0 km PM2.5: 11.3 µg/m³

What cities are near Westchester?

49 Bellwood 51 Brookfield 50 Maywood 51 La Grange 49 Melrose Park 51 Hinsdale 48 Elmhurst 51 Berwyn 49 Oak Park 47 Franklin Park
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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 2026-07-21T23:00 UTC.