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Grafton, MA Air Quality

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Air quality in Grafton

The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.

US AQI · EPA
32
Good
PM2.5
2.9 µg/m³
WHO guideline 15
PM10
2.9 µg/m³
WHO guideline 45
NO₂ · O₃
12 · 67
µg/m³

Hour by hour (12h)

US EPA AQI
8:00 PM 💨 PM2.5 2.9 µg/m³
32Good
9:00 PM 💨 PM2.5 3.6 µg/m³
32Good
10:00 PM 💨 PM2.5 3.3 µg/m³
32Good
11:00 PM 💨 PM2.5 3.8 µg/m³
33Good
12:00 AM 💨 PM2.5 4.5 µg/m³
32Good
1:00 AM 💨 PM2.5 5.1 µg/m³
31Good
2:00 AM 💨 PM2.5 5.6 µg/m³
30Good
3:00 AM 💨 PM2.5 6 µg/m³
30Good
4:00 AM 💨 PM2.5 6.1 µg/m³
31Good
5:00 AM 💨 PM2.5 6.1 µg/m³
31Good
6:00 AM 💨 PM2.5 6 µg/m³
31Good
7:00 AM 💨 PM2.5 6.2 µg/m³
30Good

Next few days

daily max · US EPA AQI
Tue 💨 Good · UV Low
38
Wed 💨 Good · UV High
37
Thu 💨 Good · UV Moderate
47
Fri 💨 Good · UV High
46
Sat 💨 Good · UV High
28
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Updated: 8:35 PM