Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Merrimack
Air quality index (AQI) and PM2.5 air pollution in Merrimack
223 people follow this city
Merrimack Air Quality Map
Real-time Merrimack air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Merrimack today?
 | Index | High | |
 | Tree pollen | High | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Merrimack?
| Weather | Broken clouds |
| Temperature | 66.2°F |
| Humidity | 65% |
| Wind | 9.2 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | San Antonio, Texas | 94 |
| 2 | San Bernardino, California | 85 |
| 3 | Boerne, Texas | 70 |
| 4 | San Fernando, California | 70 |
| 5 | Redlands, California | 69 |
| 6 | Yucaipa, California | 68 |
| 7 | Glendale, California | 67 |
| 8 | North Hollywood, California | 67 |
| 9 | Claremont, California | 65 |
| 10 | Hollywood, California | 65 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
33*
live AQI index
Good
Overview
What is the current air quality in Merrimack?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 33* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 8.1*µg/m³ | |
!
PM2.5
x1.6
PM2.5 concentration in Merrimack is currently 1.6 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Merrimack?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Merrimack air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 33 AQI US |  90% | 68° 42.8° |  8.9 mp/h |
| Friday, May 3 | Good 29 AQI US | | 60.8° 46.4° | 4.5 mp/h |
| Saturday, May 4 | Good 23 AQI US | | 60.8° 42.8° | 8.9 mp/h |
| Sunday, May 5 | Good 11 AQI US | 100% | 46.4° 42.8° | 4.5 mp/h |
| Monday, May 6 | Good 19 AQI US | | 71.6° 46.4° | 6.7 mp/h |
| Tuesday, May 7 | Moderate 51 AQI US  |  | 73.4° 48.2° | 4.5 mp/h |
| Wednesday, May 8 | Moderate 62 AQI US | 100% | 55.4° 51.8° | 4.5 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Merrimack?
No locations are available.
AQI US, Metric