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)
33
Good
Westbrook, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.25 μg/m³
0
55
155
255
425
605+
30.92 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
2.64 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 33
Good
5.70μg/m³
PM2.5
15.90μg/m³
PM10
34.91ppb
O3
0.46ppb
SO2
2.42ppb
NO2
0.14ppm
CO
AQI 44
Good
8.32μg/m³
PM2.5
19.67μg/m³
PM10
40.14ppb
O3
0.31ppb
SO2
2.39ppb
NO2
0.14ppm
CO
AQI 44
Good
7.66μg/m³
PM2.5
18.34μg/m³
PM10
41.18ppb
O3
0.34ppb
SO2
2.96ppb
NO2
0.14ppm
CO
AQI 38
Good
7.47μg/m³
PM2.5
17.93μg/m³
PM10
40.14ppb
O3
0.30ppb
SO2
2.37ppb
NO2
0.14ppm
CO
AQI 44
Good
8.33μg/m³
PM2.5
19.84μg/m³
PM10
40.02ppb
O3
0.31ppb
SO2
2.41ppb
NO2
0.14ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
15.97μg/m³
PM10
34.38ppb
O3
0.44ppb
SO2
2.87ppb
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 07:00:00 on 2026-05-14.
In the last 24 hours, the best air quality in Westbrook, Maine was observed at 01:00:00 on 2026-05-13.
As of now, the AQI in Westbrook, Maine is 33, indicating Good conditions.
Westbrook, Maine air has the highest levels of PM2.5.
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 6.276 μg/m3.
The PM10 concentration in Westbrook, Maine is 17.249 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westbrook, Maine is 0.162 ppm.
Currently, Westbrook, Maine has a sulfur dioxide (SO2) concentration of 0.385 ppb.
The current ozone (O3) level in Westbrook, Maine at the moment is 30.921 ppm.
Nitrogen dioxide (NO2) level in Westbrook, Maine at the moment is 2.637 ppb.
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