Stay updated with real-time air quality in Concord, New Hampshire 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)
21
Good
Concord, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.93 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.38 μg/m³
0
55
155
255
425
605+
23.11 ppb
0
55
71
86
201
201+
1.24 ppb
0
36
76
186
605
1005+
2.65 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Concord, New Hampshire
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AQI 21
Good
3.25μg/m³
PM2.5
11.10μg/m³
PM10
22.89ppb
O3
1.26ppb
SO2
2.62ppb
NO2
0.13ppm
CO
AQI 18
Good
2.86μg/m³
PM2.5
10.22μg/m³
PM10
19.07ppb
O3
0.82ppb
SO2
2.32ppb
NO2
0.14ppm
CO
AQI 18
Good
2.76μg/m³
PM2.5
8.53μg/m³
PM10
19.32ppb
O3
0.98ppb
SO2
2.31ppb
NO2
0.13ppm
CO
AQI 18
Good
2.90μg/m³
PM2.5
10.30μg/m³
PM10
19.13ppb
O3
0.83ppb
SO2
2.20ppb
NO2
0.13ppm
CO
AQI 20
Good
3.26μg/m³
PM2.5
10.91μg/m³
PM10
22.34ppb
O3
1.04ppb
SO2
2.65ppb
NO2
0.14ppm
CO
AQI 20
Good
2.51μg/m³
PM2.5
14.94μg/m³
PM10
22.31ppb
O3
1.01ppb
SO2
2.86ppb
NO2
0.15ppm
CO
Air quality and pollutant data for New Hampshire, 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 Concord, New Hampshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Concord, New Hampshire was at its worst at 09:00:00 on 2026-11-12.
In the last 24 hours, the best air quality in Concord, New Hampshire was observed at 10:00:00 on 2026-11-12.
As of now, the AQI in Concord, New Hampshire is 21, indicating Good conditions.
Concord, New Hampshire air has the highest levels of O3.
Poor air quality in Concord, New Hampshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Concord, New Hampshire are currently 2.928 μg/m3.
The PM10 concentration in Concord, New Hampshire is 10.384 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Concord, New Hampshire is 0.134 ppm.
Currently, Concord, New Hampshire has a sulfur dioxide (SO2) concentration of 1.241 ppb.
The current ozone (O3) level in Concord, New Hampshire at the moment is 23.108 ppm.
Nitrogen dioxide (NO2) level in Concord, New Hampshire at the moment is 2.65 ppb.
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