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AIR QUALITY DATA CONTRIBUTORS
Find out more about contributors and data sourcesIndex | Low | ||
Tree pollen | Low | ||
Grass pollen | None | ||
Weed pollen | None |
Weather | Broken clouds |
Temperature | 50°F |
Humidity | 83% |
Wind | 3.4 mp/h |
Pressure | 30 Hg |
# | city | US AQI |
---|---|---|
1 | Mecca, California | 88 |
2 | Corpus Christi, Texas | 80 |
3 | Maricopa, Arizona | 77 |
4 | Deschutes River Woods, Oregon | 75 |
5 | Pahrump, Nevada | 74 |
6 | Coachella, California | 73 |
7 | Canton, Ohio | 71 |
8 | Potomac, Maryland | 70 |
9 | Harrisburg, Pennsylvania | 69 |
10 | Claremont, California | 67 |
(local time)
SEE WORLD AQI RANKING# | station | US AQI |
---|---|---|
1 | Chelmsford Station | 19 |
2 | North Chelmsford | 12 |
3 | Carlisle Street | 7 |
(local time)
SEE WORLD AQI RANKINGUS AQI
9
live AQI index
Good
Air pollution level | Air quality index | Main pollutant |
---|---|---|
Good | 9 US AQI | PM2.5 |
Pollutants | Concentration | |
---|---|---|
PM2.5 | 1.7µg/m³ |
PM2.5 concentration in Chelmsford air currently meets the WHO annual air quality guideline value
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Day | Pollution level | Weather | Temperature | Wind |
---|---|---|---|---|
Friday, May 17 | Good 25 AQI US | 59° 50° | 6.7 mp/h | |
Saturday, May 18 | Good 20 AQI US | 57.2° 51.8° | 8.9 mp/h | |
Sunday, May 19 | Good 12 AQI US | 73.4° 48.2° | 6.7 mp/h | |
Today | Good 9 AQI US | 73.4° 48.2° | 6.7 mp/h | |
Tuesday, May 21 | Good 45 AQI US | 86° 53.6° | 11.2 mp/h | |
Wednesday, May 22 | Moderate 63 AQI US | 50% | 89.6° 60.8° | 8.9 mp/h |
Thursday, May 23 | Moderate 58 AQI US | 70% | 78.8° 62.6° | 11.2 mp/h |
Friday, May 24 | Good 28 AQI US | 77° 53.6° | 11.2 mp/h | |
Saturday, May 25 | Good 11 AQI US | 71.6° 46.4° | 6.7 mp/h | |
Sunday, May 26 | Good 31 AQI US | 90% | 68° 50° | 11.2 mp/h |
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