Air Quality in Chester, United States

Clear
25.0°C · 45.7% humidity
25.0°
Feels 25.0°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
52 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
51 4pm
51
51
40 7pm
43
45
47 10pm
48
49
50 1am
50
50
50 4am
51
51
51 7am
51
49
49 10am
49
49
49 1pm
49
49
Station readings
67
31
38
CAMS model adj +24
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

47h · 1 stn

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

45.7%
Humidity
39.8 km/h
Wind NE
1014.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
40
9.64 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Chester?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.59.64 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (52 stations within 25 km)
9.64
Median
9.66
Average
7.08
Low
16.4
High
PM2.5 µg/m³ · Model: 12.85 · Bias: +3.2

What is the 7-day forecast for Chester?

07-21
29.9° 20.7°
0.13 mm
07-22
25.3° 20.6°
1.63 mm
07-23
30.2° 20.0°
11.06 mm
07-24
28.6° 19.6°
0.38 mm
07-25
31.8° 22.0°
4.31 mm
07-26
24.2° 21.1°
7.19 mm
07-27
26.8° 23.3°
1.25 mm
Both models agree Avg diff: 2.7°C

Where are air quality stations near Chester?

15
Chester, Pennsylvania, USA
1.8 km PM2.5: 3.6 µg/m³
8
Marcus Hook, Pennsylvania, USA
5.8 km PM2.5: 1.9 µg/m³
55
Marcus Hook, Pennsylvania, USA
5.8 km PM2.5: 14.0 µg/m³
42
3001 S 84th St
10.8 km PM2.5: 10.0 µg/m³
40
AMS SWA Site
12.3 km PM2.5: 9.6 µg/m³
41
7331 Lindbergh Blvd
12.4 km PM2.5: 9.8 µg/m³
38
Cobbs Creek Pkwy & Greenway St
12.4 km PM2.5: 9.2 µg/m³
38
6298 Eastwick Ave
14.1 km PM2.5: 9.1 µg/m³
43
2600 Penrose Ave
15.3 km PM2.5: 10.3 µg/m³
41
5404 Baltimore Ave
15.5 km PM2.5: 9.8 µg/m³

What cities are near Chester?

41 Drexel Hill 39 Elmwood 41 Kingsessing 41 Cobbs Creek 40 Havertown 39 Haddington 43 University City 42 Point Breeze 43 Lower Moyamensing 36 Overbrook
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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 2026-07-21T23:42 UTC.