Air Quality in Westchester, United States

Clear
22.4°C · 35.7% humidity
22.4°
Feels 22.4°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
209 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
48 8am
48
36
23 11am
27
29
31 2pm
33
34
14 5pm
15
8
35 8pm
36
36
36 11pm
48
48
48 2am
48
48
48 5am
48
48
Station readings
60
25
13
CAMS model adj -18
66
66
54
54
54
54
54
54
54
34
34
27
54
54
54
54
66
66
66
66
66
66
66
66
AD 728×90

Air Quality Index Trend

13h · 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.

35.7%
Humidity
27.9 km/h
Wind NW
1019.8 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
23
5.59 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Westchester?

Temperature & Precipitation

PM2.5 Trend

13h · 1 station
PM2.55.59 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX12.9
Extreme
AD 300×250
Station readings (209 stations within 25 km)
5.59
Median
5.5
Average
1.95
Low
8.39
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +5.3

What is the 7-day forecast for Westchester?

09-05
22.4° 18.2°
09-06
31.3° 16.0°
0.06 mm
09-07
25.0° 18.6°
2.5 mm
09-08
22.4° 13.8°
22.31 mm
09-09
30.3° 17.5°
0.69 mm
09-10
27.5° 17.0°
0.38 mm
09-11
27.4° 16.1°
0.69 mm
Both models agree Avg diff: 5.6°C

Where are air quality stations near Westchester?

23
Austin 6
9.4 km PM2.5: 5.6 µg/m³
25
Garfield Ridge 4
9.7 km PM2.5: 6.0 µg/m³
23
Austin 7
9.8 km PM2.5: 5.5 µg/m³
23
Garfield Ridge 3
10.5 km PM2.5: 5.6 µg/m³
23
Austin 8
10.6 km PM2.5: 5.5 µg/m³
24
Montclare 2
10.6 km PM2.5: 5.7 µg/m³
27
Clearing 1
10.7 km PM2.5: 6.5 µg/m³
25
Austin 5
10.8 km PM2.5: 5.9 µg/m³
22
Austin 9
10.9 km PM2.5: 5.3 µg/m³
33
Austin 4
11.0 km PM2.5: 7.9 µg/m³

What cities are near Westchester?

23 Bellwood 24 Brookfield 23 Maywood 24 La Grange 23 Melrose Park 24 Hinsdale 23 Elmhurst 24 Berwyn 23 Oak Park 23 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 2026-09-05T16:31 UTC.