Stay updated with real-time air quality in Merced, California 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)
54
Moderate
Merced, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.00 μg/m³
0
55
155
255
425
605+
35.69 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
3.65 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Merced, California
Merced, California
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AQI 52
Moderate
9.59μg/m³
PM2.5
25.13μg/m³
PM10
29.23ppb
O3
0.34ppb
SO2
4.67ppb
NO2
0.20ppm
CO
AQI 49
Good
9.09μg/m³
PM2.5
23.39μg/m³
PM10
29.88ppb
O3
0.34ppb
SO2
4.83ppb
NO2
0.20ppm
CO
AQI 49
Good
9.27μg/m³
PM2.5
25.82μg/m³
PM10
35.21ppb
O3
0.34ppb
SO2
4.66ppb
NO2
0.20ppm
CO
AQI 44
Good
8.13μg/m³
PM2.5
27.66μg/m³
PM10
32.35ppb
O3
0.35ppb
SO2
3.69ppb
NO2
0.17ppm
CO
AQI 52
Moderate
10.08μg/m³
PM2.5
22.93μg/m³
PM10
35.09ppb
O3
0.35ppb
SO2
6.17ppb
NO2
0.22ppm
CO
AQI 52
Moderate
10.48μg/m³
PM2.5
22.99μg/m³
PM10
35.00ppb
O3
0.34ppb
SO2
6.78ppb
NO2
0.22ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Merced, California are available every hour.
Merced, California experienced its worst air quality at 08:00:00, 2026-04-25.
The best air quality in Merced, California was observed at 02:00:00 on 2026-04-24.
The air quality in Merced, California right now is Moderate, with an AQI of 54.
In Merced, California, PM2.5 is the most frequently found pollutant.
When air quality in Merced, California is compromised, staying indoors and wearing a mask can reduce health risks.
Merced, California currently has a PM2.5 concentration of 10.9 μg/m3.
Merced, California currently has a PM10 concentration of 25 μg/m3.
The current carbon monoxide (CO) level in Merced, California is 0.19 ppm.
The current sulfur dioxide (SO2) concentration in Merced, California is 0.346 ppb.
Merced, California currently has an ozone (O3) concentration of 35.685 ppm.
The current level of nitrogen dioxide (NO2) in Merced, California is 3.651 ppb.
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