Stay updated with real-time air quality in Guilford, Pennsylvania featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
40
Good
Guilford, Pennsylvania
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.78 μg/m³
0
55
155
255
425
605+
24.88 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
2.62 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Guilford, Pennsylvania
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AQI 56
Moderate
12.29μg/m³
PM2.5
44.51μg/m³
PM10
17.09ppb
O3
0.20ppb
SO2
5.09ppb
NO2
0.36ppm
CO
AQI 56
Moderate
12.43μg/m³
PM2.5
48.20μg/m³
PM10
17.13ppb
O3
0.32ppb
SO2
5.65ppb
NO2
0.36ppm
CO
AQI 56
Moderate
11.52μg/m³
PM2.5
45.12μg/m³
PM10
18.84ppb
O3
0.19ppb
SO2
5.72ppb
NO2
0.36ppm
CO
AQI 56
Moderate
12.39μg/m³
PM2.5
55.66μg/m³
PM10
18.16ppb
O3
0.20ppb
SO2
8.29ppb
NO2
0.36ppm
CO
AQI 56
Moderate
12.39μg/m³
PM2.5
55.78μg/m³
PM10
18.21ppb
O3
0.20ppb
SO2
8.31ppb
NO2
0.36ppm
CO
AQI 58
Moderate
13.01μg/m³
PM2.5
58.21μg/m³
PM10
15.09ppb
O3
0.36ppb
SO2
5.77ppb
NO2
0.36ppm
CO
Air quality and pollutant data for Pennsylvania, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Guilford, Pennsylvania is updated every hour for accuracy.
In the past 24 hours, the air quality in Guilford, Pennsylvania was at its worst at 03:00:00 on 2025-07-23.
In the last 24 hours, the best air quality in Guilford, Pennsylvania was observed at 05:00:00 on 2025-07-22.
As of now, the AQI in Guilford, Pennsylvania is 56, indicating Moderate conditions.
Guilford, Pennsylvania air has the highest levels of PM2.5.
Poor air quality in Guilford, Pennsylvania means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Guilford, Pennsylvania are currently 12.354 μg/m3.
The PM10 concentration in Guilford, Pennsylvania is 44.293 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Guilford, Pennsylvania is 0.358 ppm.
Currently, Guilford, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.193 ppb.
The current ozone (O3) level in Guilford, Pennsylvania at the moment is 16.66 ppm.
Nitrogen dioxide (NO2) level in Guilford, Pennsylvania at the moment is 5.662 ppb.
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