AQSQID: 250130008

Site Name: Chicopee

Location: Chicopee (Freeman Knoll), MA

Reporting: True, Located: True

Current AQI: 32.0

Chicopee (Freeman Knoll) MA, US: 42.194401, -72.555603

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 30, 2020, 4 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 30, 2020, 3 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 30, 2020, 2 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 30, 2020, 1 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
March 30, 2020, noon 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 30, 2020, 11 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 30, 2020, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 30, 2020, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
March 30, 2020, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 30, 2020, 7 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 30, 2020, 6 a.m. 2.0 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
March 30, 2020, 5 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 30, 2020, 4 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A N/A 32.0
 
March 30, 2020, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 30, 2020, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 30, 2020, 1 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
March 30, 2020, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 29, 2020, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 29, 2020, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 29, 2020, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
March 29, 2020, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 29, 2020, 7 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
March 29, 2020, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
March 29, 2020, 5 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
March 29, 2020, 4 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 29, 2020, 3 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
March 29, 2020, 2 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
March 29, 2020, 1 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
March 29, 2020, noon 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
March 29, 2020, 11 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
March 29, 2020, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 29, 2020, 9 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 29, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
March 29, 2020, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 29, 2020, 2 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 29, 2020, 1 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 29, 2020, midnight 10.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 11 p.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 10 p.m. 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 9 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 8 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 7 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 6 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 28, 2020, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 28, 2020, 3 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
March 28, 2020, 2 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
March 28, 2020, 1 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
March 28, 2020, noon 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 11 a.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 10 a.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 9 a.m. 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 7 a.m. 10.0 ppb (9) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 6 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 5 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 4 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
March 28, 2020, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 28, 2020, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 28, 2020, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 7.0 μg/m3 (29) 30.0
 
March 28, 2020, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
March 27, 2020, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
March 27, 2020, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
March 27, 2020, 8 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
March 27, 2020, 7 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
March 27, 2020, 6 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 27, 2020, 5 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
March 27, 2020, 4 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A -1.0 μg/m3 (0) 35.0
 
March 27, 2020, 3 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 1.0 μg/m3 (4) 34.0
 
March 27, 2020, 2 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 27, 2020, 1 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
March 27, 2020, noon 11.0 ppb (10) 4.0 ppb (4) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 11 a.m. 19.0 ppb (18) 3.0 ppb (3) N/A 16.0 ppb (15) N/A N/A 19.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 10 a.m. 17.0 ppb (16) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 20.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 9 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 8 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 27, 2020, 7 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 27, 2020, 6 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 5 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 4 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
March 27, 2020, 3 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 2 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
March 27, 2020, 1 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 27, 2020, midnight 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
March 26, 2020, 11 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
March 26, 2020, 10 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
March 26, 2020, 9 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
March 26, 2020, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 26, 2020, 7 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 26, 2020, 6 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
March 26, 2020, 5 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
March 26, 2020, 4 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
March 26, 2020, 3 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
March 26, 2020, 2 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
March 26, 2020, 1 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
March 26, 2020, noon 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 26, 2020, 11 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 26, 2020, 10 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 9 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
March 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 26, 2020, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
March 26, 2020, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 26, 2020, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 26, 2020, 1 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 7.0 μg/m3 (29) 31.0
 
March 26, 2020, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 7.0 μg/m3 (29) 32.0
 
March 25, 2020, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 25, 2020, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
March 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 25, 2020, noon 10.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 11 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 10 a.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 25, 2020, 9 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 25, 2020, 8 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 7 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 6 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 5 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 25, 2020, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 25, 2020, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 25, 2020, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 24, 2020, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 24, 2020, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 24, 2020, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 24, 2020, 8 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
March 24, 2020, 7 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
March 24, 2020, 6 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
March 24, 2020, 5 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 24, 2020, 4 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
March 24, 2020, 3 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 24, 2020, 2 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 24, 2020, 1 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
March 24, 2020, noon 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
March 24, 2020, 11 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
March 24, 2020, 10 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
March 24, 2020, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 24, 2020, 8 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 24, 2020, 7 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
March 24, 2020, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
March 24, 2020, 5 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
March 24, 2020, 4 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
March 24, 2020, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 24, 2020, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
March 24, 2020, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 24, 2020, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 23, 2020, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 23, 2020, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
March 23, 2020, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 23, 2020, 8 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 23, 2020, 7 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 7.0 μg/m3 (29) 30.0
 
March 23, 2020, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 2.0 μg/m3 (8) 29.0
 
March 23, 2020, 5 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
March 23, 2020, 4 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0