Stay updated with real-time air quality in Westbrook, Maine 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)
22
Good
Westbrook, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.98 μg/m³
0
55
155
255
425
605+
24.36 ppb
0
55
71
86
201
201+
0.79 ppb
0
36
76
186
605
1005+
2.56 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westbrook, Maine
Westbrook, Maine
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AQI 19
Good
0.35μg/m³
PM2.5
3.35μg/m³
PM10
19.76ppb
O3
0.71ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 19
Good
0.49μg/m³
PM2.5
3.88μg/m³
PM10
21.44ppb
O3
0.70ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 20
Good
0.44μg/m³
PM2.5
3.35μg/m³
PM10
21.68ppb
O3
0.70ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 19
Good
0.48μg/m³
PM2.5
3.75μg/m³
PM10
21.49ppb
O3
0.70ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 20
Good
0.49μg/m³
PM2.5
3.82μg/m³
PM10
21.53ppb
O3
0.70ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 20
Good
0.39μg/m³
PM2.5
3.32μg/m³
PM10
22.34ppb
O3
0.71ppb
SO2
1.47ppb
NO2
0.15ppm
CO
Air quality and pollutant data for Maine, 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 Westbrook, Maine is updated every hour for accuracy.
In the past 24 hours, the air quality in Westbrook, Maine was at its worst at 12:00:00 on 2025-10-31.
In the last 24 hours, the best air quality in Westbrook, Maine was observed at 12:00:00 on 2025-11-01.
As of now, the AQI in Westbrook, Maine is 19, indicating Good conditions.
Westbrook, Maine air has the highest levels of O3.
Poor air quality in Westbrook, Maine means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Westbrook, Maine are currently 0.377 μg/m3.
The PM10 concentration in Westbrook, Maine is 3.342 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westbrook, Maine is 0.146 ppm.
Currently, Westbrook, Maine has a sulfur dioxide (SO2) concentration of 0.707 ppb.
The current ozone (O3) level in Westbrook, Maine at the moment is 21.384 ppm.
Nitrogen dioxide (NO2) level in Westbrook, Maine at the moment is 1.471 ppb.
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